feat: unified `rebar3 nova gen` dispatcher with template system #66

Job	Run time
ci / Prepare checks	5s
ci / Compile	19s
ci / Format	13s
ci / Documentation	15s
ci / Xref	15s
ci / ELP Lint	0s
ci / SBOM	0s
ci / Audit	0s
ci / Mutation Testing	0s
ci / ELP eqWAlize	0s
ci / Dialyzer	0s
ci / EUnit${{ ((matrix.otp && format(' (OTP {0})', matrix.otp)) \|\| '') }}	0s
ci / Common Test${{ ((matrix.otp && format(' (OTP {0})', matrix.otp)) \|\| '') }}	0s
ci / Dependency Submission	0s
ci / Coverage	-1s
ci / Summary	-1s
	1m 5s

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