Allow workflow to be run manually #239

Job	Run time
Select platforms	1s
linux-x86 / build (debug)	6m 2s
linux-x86 / build (release)	6m 6s
linux-x64-hs-nopch / build (debug)	6m 4s
linux-x64-hs-optimized / build (debug)	6m 2s
linux-x64 / build (debug)	6m 4s
linux-x64 / build (release)	6m 4s
linux-x64-hs-zero / build (debug)	6m 2s
docs / build (debug)	4m 30s
linux-x64-hs-minimal / build (debug)	6m 5s
macos-aarch64 / build (debug)	6m 4s
macos-aarch64 / build (release)	1s
macos-x64 / build (debug)	1s
macos-x64 / build (release)	1s
windows-aarch64 / build (debug)	5m 57s
windows-aarch64 / build (release)	5m 55s
windows-x64 / build (debug)	1m 13s
windows-x64 / build (release)	5m 57s
macos-x64	1s
windows-x64	1s
linux-x86	1s
linux-x64	1s
linux-cross-compile	1s
Remove bundle artifacts	2s
	1h 18m 16s

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