[Feature]: migrate bundling measurements from `SizeAuditor` to `monosize`

Library

v8 (@fluentui/react) and v0 (@fluentui/fluentui-northstar )

Describe the feature that you would like added

v8,v0 is using lightrail service + size-auditor bot (github app) which is "unmaintained" and it will reach end of life by 31st Jan 2024 ( unless we will inherit and maintain it - we dont wanna do that) .

We have implemented bundle-size (now monosize) tool (used for v9) which has several advantages in comparison with size-auditor + lightrail:

can be run locally
does not need to query the github api
outputs the bundled code in prettified mode for analysis
can create multiple fixtures for one component to test different import scenarios, size auditor only runs once on the whole package

We need migrate all v8 and v0 from bundle-size-auditor to monosize

Have you discussed this feature with our team

@microsoft/fluentui-react-build

Additional context

No response

Validations

[X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Tasks

[x] migrate to latest monosize / https://github.com/microsoft/fluentui/pull/30381
[x] migrate v8 https://github.com/microsoft/fluentui/pull/30382
[x] migrate v0 https://github.com/microsoft/fluentui/pull/30383
[x] delete bundle-size-auditor package and pipeline https://github.com/microsoft/fluentui/pull/30405
[x] remove SizeAuditor github app and lightrail service from pipelines https://github.com/microsoft/fluentui/pull/30425
[x] rename ADO pipeline from SizeAuditor to Fluent UI React - Bundle-Size
[x] remove Fluent UI React - Bundle-Size from branch restriction check (master, 7.0)
[x] add nx generator for bundle-size setup per project / https://github.com/microsoft/fluentui/pull/30428
[x] remove SizeAuditor pipelines from 7.0 branch / https://github.com/microsoft/fluentui/pull/30427

microsoft / fluentui