chore: install and configure commitlint #996

Job	Run time
Tests	49s
Floating Dependencies	45s
ember-try: ember-lts-3.28	1m 2s
ember-try: ember-lts-4.4	57s
ember-try: ember-lts-4.8	1m 3s
Type checking - [email protected]	51s
ember-try: ember-lts-4.12	52s
Type checking - [email protected]	46s
ember-try: ember-release	59s
Type checking - [email protected]	51s
ember-try: ember-beta	59s
Type checking - typescript@next	47s
ember-try: ember-canary	51s
ember-try: ember-classic	55s
ember-try: embroider-safe	1m 12s
ember-try: embroider-optimized	1m 12s
	14m 51s

Provide feedback