Add warning in development when a result function is `x => x`. #299

Job	Run time
Build and Test on Node 16.x	23s
Check package config with are-the-types-wrong (16.x)	19s
Test Published Artifact cra4	1m 44s
Test Types with TypeScript 4.7	59s
Test Published Artifact cra5	1m 51s
Test Types with TypeScript 4.8	1m 0s
Test Published Artifact next	1m 33s
Test Types with TypeScript 4.9	31s
Test Published Artifact vite	1m 18s
Test Types with TypeScript 5.0	41s
Test Published Artifact node-standard	21s
Test Types with TypeScript 5.1	40s
Test Published Artifact node-esm	22s
Test Types with TypeScript 5.2	45s
	12m 27s

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