feat: an option to package Ruby runtime and an application separately #819

Job	Run time
build-gem	9s
Use gem to package metanorma macos-12 Ruby 3.2.5 CC clang	6m 21s
Use gem to package fontist macos-12 Ruby 3.2.5 CC clang	4m 19s
Use gem to package fontist windows-latest Ruby 3.2.5 CC gcc	23m 46s
Use gem to package metanorma alpine:3.17 Ruby 3.2.5 CC gcc	5m 43s
Use gem to package metanorma macos-14 Ruby 3.2.5 CC clang	3m 25s
Use gem to package fontist alpine:3.17 Ruby 3.2.5 CC gcc	3m 2s
Use gem to package metanorma ubuntu-20.04 Ruby 3.2.5 CC clang-12	4m 43s
Use gem to package fontist macos-14 Ruby 3.2.5 CC clang	2m 23s
Use gem to package fontist ubuntu-20.04 Ruby 3.2.5 CC clang-12	2m 10s
cross-test on ubuntu-22.04	31s
cross-test on ubuntu-24.04	29s
Release gem	0s
	57m 1s

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