feat(typescript): parse definite assignment assertions on variables #6056

Job	Run time
macOS x86_64	5m 0s
macOS AArch64	2m 9s
Linux x86_64	3m 22s
Linux ARM	1m 45s
Linux AArch64	1m 51s
Windows x86	6m 21s
Windows x64	6m 0s
Windows ARM	1m 32s
Windows ARM64	1m 34s
Scoop package	24s
MSIX installer	1m 21s
Chocolatey package	23s
test on Windows	9s
test on macOS 11	5s
test on macOS 12	4s
test on Arch Linux	10s
test on Debian 11 Bullseye	6s
test on Debian 10 Buster	6s
test on Fedora 35	8s
test on Fedora 36	6s
test on Ubuntu 18.04 LTS Bionic	9s
test on Ubuntu 20.04 LTS Focal	3s
npm package	16s
test Chocolatey package	44s
test npm package on Windows with npm	29s
test npm package on Windows with npm (--global)	27s
test npm package on Windows with Yarn	15s
test npm package on macOS 11 with npm	7s
test npm package on macOS 11 with npm (--global)	6s
test npm package on macOS 11 with Yarn	5s
test npm package on macOS 12 with npm	8s
test npm package on macOS 12 with npm (--global)	8s
test npm package on macOS 12 with Yarn	6s
test npm package on Ubuntu with npm	5s
test npm package on Ubuntu with npm (--global)	3s
test npm package on Ubuntu with Yarn	8s
winget manifests	22s
	36m 17s

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