feat: add dedicated /health endpoint for health checks #303

Job	Run time
🛃 Type Check	18s
💅 Lint	23s
🧪 Unit Tests (s3, postgres)	57s
🧪 Unit Tests (gcs, mysql)	57s
🧪 Unit Tests (filesystem, mysql)	1m 0s
🧪 Unit Tests (s3, sqlite)	50s
🧪 Unit Tests (gcs, postgres)	50s
🧪 Unit Tests (s3, mysql)	1m 2s
🧪 Unit Tests (filesystem, postgres)	45s
🧪 Unit Tests (gcs, sqlite)	48s
🧪 Unit Tests (filesystem, sqlite)	43s
🚀 Build and push	-1s
	8m 32s

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