Add github-binarycache option to use built in cache #73

Job	Run time
test-manifest (ubuntu-20.04, x64-linux-release, false)	59s
test-vcpkg-action (ubuntu-20.04, x64-linux-release, false)	1m 8s
test-manifest (macos-11, x64-osx-release, false)	2m 28s
test-vcpkg-action (macos-11, x64-osx-release, false)	2m 21s
test-manifest (windows-2019, x64-windows-release, false)	19s
test-vcpkg-action (windows-2019, x64-windows-release, false)	24s
test-manifest (ubuntu-20.04, x64-linux-release, true)	24s
test-vcpkg-action-latest-vcpkg-release (ubuntu-20.04, x64-linux-release, false)	51s
test-vcpkg-action (ubuntu-20.04, x64-linux-release, true)	29s
test-manifest (macos-11, x64-osx-release, true)	2m 27s
test-vcpkg-action (macos-11, x64-osx-release, true)	2m 13s
test-vcpkg-action-latest-vcpkg-release (macos-11, x64-osx-release, false)	2m 16s
test-manifest (windows-2019, x64-windows-release, true)	2m 55s
test-vcpkg-action (windows-2019, x64-windows-release, true)	3m 8s
test-vcpkg-action-latest-vcpkg-release (windows-2019, x64-windows-release, false)	19s
test-vcpkg-action-latest-vcpkg-release (ubuntu-20.04, x64-linux-release, true)	39s
test-vcpkg-action-latest-vcpkg-release (macos-11, x64-osx-release, true)	2m 34s
test-vcpkg-action-latest-vcpkg-release (windows-2019, x64-windows-release, true)	3m 10s
	29m 4s

Provide feedback