Use addon-dev declarations plugin for d.ts output #878

Job	Run time
Tests: Type Check	20s
Lint JS	19s
Slow tests: defaults with npm	1m 51s
Tests (addon-location)	52s
Slow tests: defaults with yarn	1m 32s
Tests (test-app-location)	1m 13s
Slow tests: typescript with npm	2m 16s
Tests (addon-only)	25s
Slow tests: defaults with pnpm	1m 10s
Slow tests: typescript with yarn	1m 46s
Tests (monorepo with npm)	1m 41s
Slow tests: typescript with pnpm	1m 7s
Tests (monorepo with yarn)	1m 21s
Tests (monorepo with pnpm)	44s
Tests (rollup-build)	1m 16s
Tests (declarations-configuration)	31s
	18m 24s

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