TA3 Schema Integration and Metadata Parsing (#36)

* Adds baseline implementation of schemas for TA3 integration

* Updates the schema to include column information from shared spreadsheet

* WIP implementation of schema for raw data sources

* WIP scraping script for CMA raster data

* First cut at extracting schema items from sciencebase

* Adds .tif if not already present; shp files now supported

* Cogifies tiffs now; import section cleanup

* Adds options to cog generator

* Fixes syntax errors in ta3_model.py

* Cleans up import formatting more rigorously this time

* Removes ta3 schema population script from this repo

* Reformats ta3_input.py and ta3_model.py

* Updates naming conventions in MTRI-defined schemas

* Fixes formatting

* Performs final renames that slipped under the radar

* Update README with new ERD

* Update docs to include prospectivity input and models

* Reformats docs.py

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Co-authored-by: Erick Vega <efvega@mtu.edu>