Add opendrr psra canada (#211)

* Update opendrr_config_template.yml

Added PSRA Canada Agg Loss layers to pygeoapi

* Versioning collections

Added parameter to config to select version desired. Removed version from collection name.

* Updated configuration files

* Fix python linting errors

* Fix linting errors

* Fix linting errors

* Update opendrr.openapi.yml

* Update opendrr.openapi.yml

* Update requirements.txt