feat(macos): migrate init template from Objective-C to Swift #1623

Job	Run time
Lint PR title	16s
JavaScript Tests	15s
Check Yarn Constraints	19s
NPM Publish (Dry Run)	17s
Build the website / Build the website	54s
Build RNTester / visionos, newarch	24s
Build RNTester / ios, oldarch	20s
Build RNTester / visionos, oldarch	22s
Prebuild macOS Core / Resolve Hermes / Resolve Hermes	31s
Build RNTester / macos, oldarch	32s
Build RNTester / macos, newarch	23s
Build RNTester / ios, newarch	25s
Test react-native-macos init	0s
Check for Changesets	0s
Prebuild macOS Core / Resolve Hermes / Build hermesc	-1s
Prebuild macOS Core / Resolve Hermes / Hermes ${{ matrix.slice }}	-1s
Prebuild macOS Core / Resolve Hermes / Assemble Hermes xcframework	-1s
Prebuild macOS Core / Build ${{ matrix.platform }}	0s
Prebuild macOS Core / Compose XCFramework (Debug)	0s
PR	3s
	4m 58s

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