Add lat lng to firestore on service provider documents so we don't have to always make an api call

**Is your feature request related to a problem? Please describe.**
Too many API calls

**Describe the solution you'd like**
Only call the geocode API when lat lng doesn't exist on the document.
Asynchronously store the lat lng on the document when the geocode API is called.

**Describe alternatives you've considered**
None

**Additional context**
Service Page, Index in Server/