* Adding the skeleton for Firestore integration
* Adding the datasource & query editor forms
Also adding the database changelog for the firestore plugin
Commenting out the firestore.close() connection because that causes issues with multiple Firestore tenants running in the same JVM.
* Adding the code for fetching the structure of collections from Firestore
* Use single document path field for Firestore
* Fix potential NPE when datasource destroy timeouts
* Work in progress on collection level ops for Firestore
* Get documents in a collection now works
* Add collection level querying support
* Mild refactoring
* Fix NPE when some fields are missing
* Hide clientJSON as a password field for Firestore
* Make collection level querying reactive
* Make reactive
* Validate before connecting
* Add tests for all supported methods in Firestore
* Fix forms for Firestore with hidden fields
* Hide limit and order by fields when not needed
* Restore log entry deleted by mistake
* Use S3 URL for Firestore/Firebase logo
* Add comments detailing why some code is commented
* Make parsing JSON reactive and fix subscribe calls
* Fix reactive scheduler
Co-authored-by: Arpit Mohan <arpit@appsmith.com>
