allow template crates to have a lib target #729

Job	Run time
CLI	4m 40s
Build binaries	3m 56s
Test (ubuntu-latest)	3m 33s
Examples	7m 46s
Test (runs-on, runner=8cpu-linux-arm64, run-id=12480549277)	2m 23s
Test (macos-latest)	2m 16s
Formatting & Clippy	22s
Test (Go) (ubuntu-latest)	1m 32s
Test (Go) (runs-on, runner=8cpu-linux-arm64, run-id=12480549277)	1m 7s
Test (Go) (macos-latest)	1m 37s
Test (Go) (windows-latest)	4m 6s
	33m 18s

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