Add multi-caret enhancement: column mode to multi-caret on HOME/END/A… #9

Job	Run time
build_windows_cmake (Release, x64, amd64)	6m 1s
build_windows_msys2 (Release, x86_64)	11m 22s
build_windows (Release, x64)	6m 49s
build_windows_msys2 (Release, i686)	9m 14s
build_windows (Release, Win32)	5m 41s
build_windows_msys2 (Debug, x86_64)	5m 32s
build_windows (Release, ARM64)	6m 28s
build_windows_msys2 (Debug, i686)	4m 32s
build_windows (Debug, x64)	10m 42s
build_windows (Debug, Win32)	5m 54s
build_windows (Debug, ARM64)	5m 47s
	1h 18m 2s

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