chore: readme and extension icon #12

Job	Run time
build (windows-latest, win32, x64, x64, x86_64-pc-windows-gnu)	4m 4s
build (windows-latest, win32, x64, x64, x86_64-pc-windows-gnu)	4m 4s
build (ubuntu-latest, linux, x64, x64, x86_64-unknown-linux-gnu)	1m 38s
build (ubuntu-latest, linux, x64, x64, x86_64-unknown-linux-gnu)	1m 38s
build (ubuntu-latest, linux, arm64, arm64, aarch64-unknown-linux-gnu)	2m 45s
build (ubuntu-latest, linux, arm64, arm64, aarch64-unknown-linux-gnu)	2m 45s
build (macos-latest, darwin, x64, x64, x86_64-apple-darwin)	2m 3s
build (macos-latest, darwin, x64, x64, x86_64-apple-darwin)	2m 3s
build (macos-latest, darwin, arm64, arm64, aarch64-apple-darwin)	2m 1s
build (macos-latest, darwin, arm64, arm64, aarch64-apple-darwin)	2m 1s
publish	24s
publish	8s
	25m 34s

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