Codegen 105: add typeAlias prop in parsers

[tarunrajput]

Summary:

Part of Codegen Issue: #34872

Add a typeAlias: string property to the Parser class. Implement it in the Flow parser so that it returns TypeAlias and in
the TypeScriptParser so that it returns TSTypeAliasDeclaration. Replace the case in the switch in the parsers/flow/utils.js and parsers/typescript/utils.js with this prop.

Changelog:

[Internal][Added]: Add typeAlias property in parsers

Test Plan:

yarn test

[cipolleschi]

Thanks for doing this! 👏

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	8,732,590	-3
android	hermes	armeabi-v7a	8,043,921	-4
android	hermes	x86	9,221,936	-4
android	hermes	x86_64	9,074,913	+1
android	jsc	arm64-v8a	9,297,786	+0
android	jsc	armeabi-v7a	8,486,551	-1
android	jsc	x86	9,358,530	-2
android	jsc	x86_64	9,615,112	-1

Base commit: d8ced6f
Branch: main

[cipolleschi]

Sorry, this now need a rebase and conflict resolution. :(

[tarunrajput]

Sorry, this now need a rebase and conflict resolution. :(

No worries, I have rebased and resolved the conflicts.

[cipolleschi]

/rebase

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@cipolleschi merged this pull request in 0de4768.