CICD

Add installation guide to VS Code Extension readme #1463

Job	Run time
Documentation checks	6m 27s
WASM version	2m 14s
Ensure 'cargo fmt' has been run	12s
Extract crate metadata	3s
Package vscode extension	9s
Minimum supported rust version	1m 56s
aarch64-unknown-linux-gnu (ubuntu-20.04)	3m 41s
arm-unknown-linux-gnueabihf (ubuntu-20.04)	3m 44s
arm-unknown-linux-musleabihf (ubuntu-20.04)	4m 1s
i686-pc-windows-msvc (windows-2019)	6m 52s
i686-unknown-linux-gnu (ubuntu-20.04)	3m 41s
i686-unknown-linux-musl (ubuntu-20.04)	3m 42s
x86_64-apple-darwin (macos-13)	4m 41s
aarch64-apple-darwin (macos-15)	2m 19s
x86_64-pc-windows-msvc (windows-2019)	7m 51s
x86_64-unknown-linux-gnu (ubuntu-20.04)	3m 26s
x86_64-unknown-linux-musl (ubuntu-20.04)	3m 29s
	58m 28s

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