Adding watch option using dmon #5302

Job	Run time
Update LFS data cache	14s
webassembly	1m 38s
external-build	1m 26s
android (armeabi-v7a)	1m 36s
android (arm64-v8a)	1m 35s
android (x86)	1m 38s
android (x86_64)	1m 45s
windows (commit)	3m 32s
macos (commit, no-bundle)	12m 37s
windows (v9.3.0)	4m 4s
macos (v9.3.0, no-bundle)	7m 51s
windows (v9.2.6)	3m 40s
macos_arm (commit, no-bundle)	3m 43s
macos (v9.2.6, no-bundle)	7m 1s
linux (commit, standard)	4m 50s
macos_arm (v9.3.0, no-bundle)	4m 16s
linux (v9.3.0, standard)	5m 8s
macos (commit, bundle)	9m 48s
macos_arm (v9.2.6, no-bundle)	3m 22s
linux (v9.2.6, standard)	4m 50s
macos_arm (commit, bundle)	4m 10s
linux (v9.1.0, standard)	4m 8s
coverage	5m 31s
linux (v9.0.0, standard)	3m 34s
python-packaging (ubuntu)	3m 2s
linux (headless, commit, raytracing, optional-deps, no-exclude-deprecated, egl)	5m 14s
sanitizer (address)	6m 52s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, no-egl)	4m 42s
sanitizer (thread)	9m 20s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, no-egl)	3m 32s
sanitizer (undefined)	4m 33s
python-packaging (windows)	4m 0s
python-packaging (macos)	3m 8s
static-analysis	3m 27s
	2h 29m 47s

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