feat(watcher): sync SVN working copies automatically #849

Job	Run time
changes	4s
security / codeql-gate	23m 48s
lint / lint	7m 13s
security / license-gate	2m 37s
security / security-static	36s
pr-smoke (windows-latest)	6m 56s
pr-smoke (ubuntu-latest)	4m 11s
pr-smoke (macos-14)	3m 11s
test / test-windows-guards	7m 7s
test / test-tsan	13m 51s
test / setup-matrix	3s
test / test-windows (windows-latest, CLANG64, x86_64)	9m 10s
test / test-unix (ubuntu-24.04-arm, gcc, g++)	13m 21s
test / test-unix (ubuntu-latest, gcc, g++)	16m 26s
test / test-unix (macos-15-intel, cc, c++)	16m 27s
test / test-unix (macos-14, cc, c++)	12m 19s
ci-ok	2s
	2h 17m 22s

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