Cleanup the template documentation after RNGP & hermesEnabled to gradle.properties

[cortinico]

Summary: I've rewritten the comment in the android/app/build.gradle. They were really old, contained wrong links and most of the people ignored it.

I've also moved the enabling of Hermes to the gradle.properties file. RNGP still supports the old method, but we must be sure that we notify library authors if they were reading project.ext.react.enableHermes in the past (also the website needs to be updated).

I've also cleaned up the CircleCI setup as now we can specify Hermes enabled/disabled via the CLI (this will also make easier to do e2e testing).

Changelog: [Android] [Changed] - Cleanup the template documentation after RNGP & hermesEnabled to gradle.properties

Differential Revision: D40762872

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D40762872

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D40762872

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D40762872

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D40762872

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D40762872

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	7,001,888	+495
android	hermes	armeabi-v7a	6,378,328	+461
android	hermes	x86	7,414,780	+832
android	hermes	x86_64	7,278,674	+802
android	jsc	arm64-v8a	8,867,565	+0
android	jsc	armeabi-v7a	7,605,882	+0
android	jsc	x86	8,925,465	+0
android	jsc	x86_64	9,408,701	+0

Base commit: ba5454c42134cc09772f024772b19a9990b1fb7f Branch: main

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: ba5454c42134cc09772f024772b19a9990b1fb7f Branch: main

[pull-bot]

PR build artifact for be72feb4b024968dfa86bf5b7db60c5b6ec59b70 is ready. To use, download tarball from "Artifacts" tab in this CircleCI job then run yarn add <path to tarball> in your React Native project.

[pull-bot]

PR build artifact for be72feb4b024968dfa86bf5b7db60c5b6ec59b70 is ready. To use, download tarball from "Artifacts" tab in this CircleCI job then run yarn add <path to tarball> in your React Native project.

[react-native-bot]

This pull request was successfully merged by @cortinico in 6a43fafd78d581f63c664b9af6d10828ac7f77fa.

^{When will my fix make it into a release? | Upcoming Releases}