feat: Add WebDav Backup #945

Job	Run time
build-extension	7s
change-version	1m 34s
build-for-macos (macos-latest, aarch64-apple-darwin)	13m 38s
build-for-macos (macos-latest, x86_64-apple-darwin)	19m 51s
build-for-windows (windows-latest, x86_64-pc-windows-msvc)	22m 37s
build-for-windows (windows-latest, i686-pc-windows-msvc)	21m 21s
build-for-windows (windows-latest, aarch64-pc-windows-msvc)	19m 11s
build-for-linux (ubuntu-latest, x86_64-unknown-linux-gnu)	17m 40s
build-for-linux (ubuntu-latest, i686-unknown-linux-gnu)	15m 18s
build-for-linux (ubuntu-latest, aarch64-unknown-linux-gnu)	15m 27s
build-for-linux (ubuntu-latest, armv7-unknown-linux-gnueabihf)	19m 47s
Update Homebrew cask	0s
Update WinGet Package	0s
release-update	0s
	2h 46m 31s

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