feat(landing): add glossary (#2085) #1299

Job	Run time
agent_local_test / test_agent_local	39m 41s
Test API / API Test Local	7m 11s
semantic_cache_preview_deployment / deploy	1m 47s
semantic_cache_production_deployment / deploy	1m 36s
api_preview_deployment / deploy	1m 44s
build_agent_image / Build Agent	2m 8s
agent_staging_deployment / deploy	5m 52s
api_preview_test / API Test Staging (1/8)	4m 14s
api_preview_test / API Test Staging (2/8)	2m 29s
api_preview_test / API Test Staging (3/8)	3m 56s
api_preview_test / API Test Staging (4/8)	3m 40s
api_preview_test / API Test Staging (5/8)	1m 47s
api_preview_test / API Test Staging (6/8)	2m 27s
api_preview_test / API Test Staging (7/8)	2m 48s
api_preview_test / API Test Staging (8/8)	1m 59s
api_canary_deployment	0s
agent_production_deployment	0s
api_canary_test	0s
api_production_deployment	0s
logdrain_production_deployment	0s
Deploy docs	0s
deploy-enterprise-worker	0s
	1h 23m 19s

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