…d LPO modules (#1667)

202503 cherry-pick for
sonic-net/sonic-buildimage#23841

<!--
Please make sure you've read and understood our contributing guidelines:
     https://github.com/Azure/SONiC/blob/gh-pages/CONTRIBUTING.md

** Make sure all your commits include a signature generated with `git
commit -s` **

If this is a bug fix, make sure your description includes "fixes #xxxx",
or
     "closes #xxxx" or "resolves #xxxx"

     Please provide the following information:
-->

#### Why I did it
Added SI settings for the 1x800G LPO module on Arista 7060X6

##### Work item tracking
- Microsoft ADO **(number only)**:

#### How I did it
Added the media_settings.json
Added the optics_si_settings.json

#### How to verify it

<!--
If PR needs to be backported, then the PR must be tested against the
base branch and the earliest backport release branch and provide tested
image version on these two branches. For example, if the PR is requested
for master, 202211 and 202012, then the requester needs to provide test
results on master and 202012.
-->

#### Which release branch to backport (provide reason below if selected)

<!--
- Note we only backport fixes to a release branch, *not* features!
- Please also provide a reason for the backporting below.
- e.g.
- [x] 202006
-->

- [ ] 201811
- [ ] 201911
- [ ] 202006
- [ ] 202012
- [ ] 202106
- [ ] 202111
- [ ] 202205
- [ ] 202211

#### Tested branch (Please provide the tested image version)

<!--
- Please provide tested image version
- e.g.
- [x] 20201231.100
-->

- [ ] <!-- image version 1 -->
- [ ] <!-- image version 2 -->

#### Description for the changelog
<!--
Write a short (one line) summary that describes the changes in this
pull request for inclusion in the changelog:
-->

<!--
Ensure to add label/tag for the feature raised. example - PR#2174 under
sonic-utilities repo. where, Generic Config and Update feature has been
labelled as GCU.
-->

#### Link to config_db schema for YANG module changes
<!--
Provide a link to config_db schema for the table for which YANG model
is defined
Link should point to correct section on
https://github.com/Azure/sonic-buildimage/blob/master/src/sonic-yang-models/doc/Configuration.md
-->

#### A picture of a cute animal (not mandatory but encouraged)

…dules (sonic-net#23841)

Why I did it
Added SI settings for the 1x800G LPO module on Arista 7060X6

How I did it
Added the media_settings.json
Added the optics_si_settings.json
How to verify it
Tested the following

Multiple switch reboots
48+ hours soak test and ensured there ae no link flap, FEC histogram Bin <= 4, MAX pre-FEC BER < 4.01E-8 on all 64 ports , real time pre-FEC BER < 1E-8
Able to upgrade the CDB firmware

Signed-off-by: Prince George <[email protected]>
Signed-off-by: Feng Pan <[email protected]>