feat(nx-dev): generate migration detail pages

[isaacplmann]

Generates migration detail pages for every migration

To add sample code changes for a migration that has an implementation file, create a .md file with the same name as the implementation file in the same folder as the implementation file. i.e. move-cache-directory.md for move-cache-directory.ts.

Migrations that have packages defined will have a table generated with the package updates listed.

Separate PRs will be created to add sample code changes for each migration with an implementation.

The migration list on the plugin overview page: Angular migrations
Sample migration with added markdown file details: 17.0.0-move-cache-directory
Sample migration with only package updates: Angular 16.4.0
Sample migration without any markdown file details: 17.0.0-use-minimal-config-for-tasks-runner-options

• This last sample is very bare-bones and the reason why we need these pages in the first place. People don't know what migrations are actually doing. Follow up PRs will address pages like this.

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 05e8d38.

Command	Status	Duration	Result
nx affected --targets=lint,test,build,e2e,e2e-c...	✅ Succeeded	5m 23s	View ↗
nx run-many -t check-imports check-commit check...	✅ Succeeded	23s	View ↗
nx-cloud record -- nx format:check --base=df27a...	✅ Succeeded	6s	View ↗
nx-cloud record -- nx-cloud conformance:check	✅ Succeeded	1s	View ↗
nx-cloud record -- nx sync:check	✅ Succeeded	<1s	View ↗
nx documentation --no-dte	✅ Succeeded	<1s	View ↗
nx affected -t e2e-macos-local --parallel=1 --b...	✅ Succeeded	1s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-01-13 16:38:25 UTC

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[leosvelperez]

@isaacplmann do we plan to render the requirements some migrations have? I think it would make sense to do so as it adds clarity about why some migrations might run or not. Examples of those requirements:

• package update requires: https://github.com/nrwl/nx/blob/master/packages/angular/migrations.json#L1322-L1328
• migration generator requires: https://github.com/nrwl/nx/blob/master/packages/angular/migrations.json#L330-L332