refactor(@angular/build): introduce internal generic test runner API … #1813

Job	Run time
lint	2m 18s
build	15s
e2e_windows (windows-2025, 22, npm, 1)	30s
e2e_windows (windows-2025, 22, npm, 0)	55s
e2e_windows (windows-2025, 22, npm, 3)	46s
e2e_windows (windows-2025, 22, npm, 5)	32s
e2e_windows (windows-2025, 22, npm, 2)	30s
e2e_windows (windows-2025, 22, npm, 4)	29s
e2e_windows (windows-2025, 22, esbuild, 0)	32s
e2e_windows (windows-2025, 22, esbuild, 3)	26s
e2e_windows (windows-2025, 22, esbuild, 2)	25s
e2e_windows (windows-2025, 22, esbuild, 1)	42s
e2e_windows (windows-2025, 22, esbuild, 5)	31s
e2e_windows (windows-2025, 22, esbuild, 4)	25s
publish-snapshots	0s
Browser Compatibility Tests	0s
e2e-package-managers	0s
e2e	0s
test	0s
e2e-snapshots	0s
	9m 16s

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