Weekly release update

[peombwa]

This PR updates the current weekly OpenAPI download ADO pipeline by making the following changes:

• Adds a step to get a diff of modules with OpenAPI docs changes.
• Adds a step to calculate and bump minor version number of modules with changes based on the current version in PS Gallery. Modules without OpenAPI changes won't have a version bump.
• Adds an option to just build and run unit tests without signing or publishing artifacts. This reduces the overall build and validation time of OpenAPI changes.
• Simplifies ADO pipeline scripts by removing duplicate/unnecessary steps.
• Updates tools/GenerateProfiles.ps1 to always generate sorted profile definitions. This will reduce the size of future weekly PRs. Profile definitions are used to map resource segments to API versions.
• Updates tools/GenerateModules.ps1 to optionally accept a list of modules to generate via -ModulesToGenerate. This is used to only build modules with changes.
• Adds retry logic to tools/DownloadOpenApiDoc.ps1 with an exponential backoff for HTTP status code 429, 503 and 504.

A complete run with the changes above can be found here : https://microsoftgraph.visualstudio.com/Graph%20Developer%20Experiences/_build/results?buildId=37435&view=results

Closes #490