feat(cmake): make generated app cmake registry-safe and extensible #49

Job	Run time
Standalone Package Export Check	59s
Build (gcc)	57s
Static Analysis	58s
Configuration Coverage	56s
Valgrind Checks	59s
Build (clang)	1m 3s
Runtime Smoke Checks	15m 41s
CLI Strict CI Summary	0s
	21m 33s

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