Adding watch option using dmon #5289

Job	Run time
Update LFS data cache	6s
external-build	1m 29s
webassembly	1m 33s
android (armeabi-v7a)	1m 44s
android (arm64-v8a)	1m 35s
android (x86)	1m 33s
android (x86_64)	1m 48s
windows (commit)	4m 35s
linux (commit, standard)	5m 24s
windows (v9.3.0)	3m 42s
windows (v9.2.6)	4m 10s
linux (v9.3.0, standard)	5m 14s
macos_arm (commit, no-bundle)	3m 32s
linux (v9.2.6, standard)	4m 28s
macos (commit, no-bundle)	9m 42s
macos_arm (v9.3.0, no-bundle)	3m 39s
linux (v9.1.0, standard)	4m 8s
macos (v9.3.0, no-bundle)	19m 39s
macos_arm (v9.2.6, no-bundle)	3m 6s
macos (v9.2.6, no-bundle)	6m 47s
linux (v9.0.0, standard)	3m 20s
macos_arm (commit, bundle)	3m 58s
macos (commit, bundle)	9m 1s
linux (headless, commit, raytracing, optional-deps, no-exclude-deprecated, egl)	4m 46s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, no-egl)	4m 44s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, no-egl)	3m 9s
coverage	4m 39s
python-packaging (ubuntu)	2m 50s
python-packaging (windows)	4m 23s
sanitizer (address)	6m 57s
python-packaging (macos)	2m 57s
static-analysis	3m 15s
sanitizer (thread)	21m 33s
sanitizer (undefined)	4m 37s
	2h 48m 3s

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