feat(headless): eval DSL exprs in args #340

Job	Run time
Lint	1m 28s
Tests (ubuntu-latest)	8m 6s
Tests (windows-latest)	10m 56s
Tests (macOS-latest)	5m 59s
Run example SDK	1m 37s
Functional tests (ubuntu-latest)	5m 34s
Functional tests (windows-latest)	16m 3s
CodeQL analysis	5m 25s
Integration tests (ubuntu-latest)	15m 6s
Functional tests (macOS-latest)	5m 34s
Release test	12m 35s
Integration tests (windows-latest)	20m 9s
Integration tests (macOS-latest)	14m 5s
Template validate	1m 0s
Flamegraph	3m 22s
	2h 6m 59s

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