…cript (#748)

Currently the .NET install script for Serverless-Init makes
unauthenticated requests to the Github API, sometimes resulting in rate
limiting. This PR adds a `GITHUB_TOKEN` to be passed as a [Docker
secret](https://docs.docker.com/build/building/secrets/) to the .NET
install script to allow for an increased rate limit. If no
`GITHUB_TOKEN` is passed then requests will be unauthenticated as they
were before this change.

## Motivation

#734

## Additional Notes

- Check if a `GITHUB_TOKEN` environment variable is set. If it is, pass
it in the `Authorization` header with `Bearer`
- Add a `status_code` attribute to the response json and print it for
troubleshooting
- Use `jq` to parse the response json
* Note that control characters needed to be stripped from the Github
responses in order to be successfully parsed
- If the tracer version is not parsed from the response json, presumably
due to rate limiting or some other issue on Github's end, exit the
script

Github token provided -> success
```
#16 6.759 Github token provided
#16 7.243 Status code of version request: 200
#16 7.291 Downloading version 3.21.0 of the .NET tracer into /tmp/datadog-dotnet-apm.tar.gz
#16 7.291 Github token provided
#16 10.08 Status code of download request: 200
```

No Github token provided -> success
```
#16 7.664 Github token not provided
#16 7.967 Status code of version request: 200
#16 8.018 Downloading version 3.21.0 of the .NET tracer into /tmp/datadog-dotnet-apm.tar.gz
#16 8.019 Github token not provided
#16 11.10 Status code of download request: 200
```

No Github token provided -> rate limited
```
6.518 Github token not provided
6.780 Status code of version request: 403
6.828 Error: Could not determine the tracer version. Exiting.
```

### Usage

- Pass value in `GITHUB_TOKEN` environment variable to the Docker secret
`github-token`.
```
docker build -t <image> --secret id=github-token,env=GITHUB_TOKEN .
```

- In the Dockerfile, read the value of the `github-token` secret into
the `GITHUB_TOKEN` environment variable so it can be passed in the
authentication header of the Github API request.
```
RUN --mount=type=secret,id=github-token,env=GITHUB_TOKEN \
    chmod +x /app/dotnet.sh && /app/dotnet.sh
```

Relevant documentation to update following this change:
-
https://docs.datadoghq.com/serverless/guide/gcr_serverless_init/?tab=dotnet
-
https://docs.datadoghq.com/serverless/guide/aca_serverless_init/?tab=dotnet
-
https://docs.datadoghq.com/serverless/guide/azure_app_service_linux_containers_serverless_init/?tab=dotnet

* update `ReportMetrics` to be an enum to allow `Elevator` metrics

allows us to have a diff to check in the other components

* set metrics for lifecycle given the type of report

* only send log for `OnDemand` metrics

* send correct enhanced metrics given the type of report

* add doc coments

* fmt

…#949)

## Overview

Fixes below error:


https://github.com/DataDog/datadog-lambda-extension/actions/runs/19829559230/job/56812757592

```
#16 [compresser  3/10] RUN apt-get install -y zip binutils
#16 0.095 Reading package lists...
#16 1.033 Building dependency tree...
#16 1.217 Reading state information...
#16 1.357 The following additional packages will be installed:
#16 1.358   binutils-common binutils-x86-64-linux-gnu libbinutils libctf-nobfd0 libctf0
#16 1.358   unzip
#16 1.359 Suggested packages:
#16 1.359   binutils-doc
#16 1.392 The following NEW packages will be installed:
#16 1.392   binutils binutils-common binutils-x86-64-linux-gnu libbinutils libctf-nobfd0
#16 1.393   libctf0 unzip zip
#16 1.648 0 upgraded, 8 newly installed, 0 to remove and 0 not upgraded.
#16 1.648 Need to get 3769 kB of archives.
#16 1.648 After this operation, 15.7 MB of additional disk space will be used.
#16 1.648 Err:1 http://security.ubuntu.com/ubuntu jammy-security/main amd64 binutils-common amd64 2.38-4ubuntu2.11
#16 1.648   404  Not Found [IP: 91.189.91.82 80]
#16 1.727 Err:2 http://security.ubuntu.com/ubuntu jammy-security/main amd64 libbinutils amd64 2.38-4ubuntu2.11
#16 1.727   404  Not Found [IP: 91.189.91.82 80]
#16 1.727 Err:3 http://security.ubuntu.com/ubuntu jammy-security/main amd64 libctf-nobfd0 amd64 2.38-4ubuntu2.11
#16 1.727   404  Not Found [IP: 91.189.91.82 80]
#16 1.727 Err:4 http://security.ubuntu.com/ubuntu jammy-security/main amd64 libctf0 amd64 2.38-4ubuntu2.11
#16 1.727   404  Not Found [IP: 91.189.91.82 80]
#16 1.727 Err:5 http://security.ubuntu.com/ubuntu jammy-security/main amd64 binutils-x86-64-linux-gnu amd64 2.38-4ubuntu2.11
#16 1.727   404  Not Found [IP: 91.189.91.82 80]
#16 1.727 Err:6 http://security.ubuntu.com/ubuntu jammy-security/main amd64 binutils amd64 2.38-4ubuntu2.11
#16 1.727   404  Not Found [IP: 91.189.91.82 80]
#16 1.838 Get:7 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 unzip amd64 6.0-26ubuntu3.2 [175 kB]
#16 2.515 Get:8 http://archive.ubuntu.com/ubuntu jammy/main amd64 zip amd64 3.0-12build2 [176 kB]
#16 2.625 Fetched 350 kB in 1s (287 kB/s)
#16 2.625 E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/b/binutils/binutils-common_2.38-4ubuntu2.11_amd64.deb  404  Not Found [IP: 91.189.91.82 80]
#16 2.625 E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/b/binutils/libbinutils_2.38-4ubuntu2.11_amd64.deb  404  Not Found [IP: 91.189.91.82 80]
#16 2.625 E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/b/binutils/libctf-nobfd0_2.38-4ubuntu2.11_amd64.deb  404  Not Found [IP: 91.189.91.82 80]
#16 2.625 E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/b/binutils/libctf0_2.38-4ubuntu2.11_amd64.deb  404  Not Found [IP: 91.189.91.82 80]
#16 2.625 E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/b/binutils/binutils-x86-64-linux-gnu_2.38-4ubuntu2.11_amd64.deb  404  Not Found [IP: 91.189.91.82 80]
#16 2.625 E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/b/binutils/binutils_2.38-4ubuntu2.11_amd64.deb  404  Not Found [IP: 91.189.91.82 80]
#16 2.625 E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
#16 ERROR: process "/bin/sh -c apt-get install -y zip binutils" did not complete successfully: exit code: 100
```

## Testing