This provides an initial version of a VSCode extension that allows users to debug their applications using the Snapshot Debugger within VSCode. This is a proposed enhancement to address #82

Some additional work is expected before this will be released.

See the extension's README for more information on the extension.

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Co-authored-by: Jason Borg <[email protected]>

- Avoid syncing active breakpoints from the backend while the
  setBreakPointsRequest is active.
- Use a copy of the setBreakPointsRequest input breakpoints and
  provide copies of the breakpoints in the corresponding response.

…133)

The connection timeout is currently hardcoded to 2 seconds. It is likely that this is not going to work in all situations, so I'm adding a configuration knob to allow the user to set whatever timeout they'd like.

Depending on feedback, the default timeout may be increased as well. The balance is that if the extension is attempting to discover the database, increases in timeouts will result in slower extension startup.

This PR is related to #135

Use fully qualified exception names in overgeneral-exceptions option.

This fixes the following warning:

```
pylint: Command line or configuration file:1: UserWarning: Specifying exception names in the overgeneral-exceptions option without module name is deprecated and support for it will be removed in pylint 3.0. Use fully qualified name (maybe 'builtins.BaseException' ?) instead.
```

This change allows the user to specify an arbitrary region via the `--location` option to the `init` command. The `--location` option previously existed, however it only allowed the default value of `us-central1`. While the URL of databases in different regions will have different naming conventions, the CLI already made no assumptions in this regard and no extra changes were required to find the DB URL to use. The changes were the following:

- The `init` command no longer enforces the default of `us-central1` for the `--location` argument.
- Some enhancements to checks and user messages on errors were added for the `init` command when `--location` is used.
- The README was updated with documentation regarding regions

fixes #134
fixes #141

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Co-authored-by: James McTavish <[email protected]>

The CLI now supports creating the Firebase RTDB in different regions, as
listed in
https://firebase.google.com/docs/projects/locations#rtdb-locations. This
can be specfied via the `--location` parameter in the `init` command.