chore: install and configure commitlint #995

Job	Run time
Floating Dependencies	52s
Tests	49s
Type checking - [email protected]	48s
ember-try: ember-lts-3.28	1m 0s
Type checking - [email protected]	48s
ember-try: ember-lts-4.4	58s
Type checking - [email protected]	47s
ember-try: ember-lts-4.8	1m 0s
Type checking - typescript@next	51s
ember-try: ember-lts-4.12	58s
ember-try: ember-release	1m 7s
ember-try: ember-beta	53s
ember-try: ember-canary	1m 2s
ember-try: ember-classic	58s
ember-try: embroider-safe	56s
ember-try: embroider-optimized	59s
	14m 46s

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