Add get_databases method to glue moto client. Update IMPLEMENTATION_COVERAGE.md with methods that were covered previously

IMPLEMENTATION_COVERAGE.md

@@ -3351,11 +3351,11 @@
 - [ ] update_listener
 
 ## glue
-4% implemented
-- [ ] batch_create_partition
+14/123 = 11% implemented
+- [X] batch_create_partition
 - [ ] batch_delete_connection
-- [ ] batch_delete_partition
-- [ ] batch_delete_table
+- [X] batch_delete_partition
+- [X] batch_delete_table
 - [ ] batch_delete_table_version
 - [ ] batch_get_crawlers
 - [ ] batch_get_dev_endpoints
@@ -3372,7 +3372,7 @@
 - [ ] create_dev_endpoint
 - [ ] create_job
 - [ ] create_ml_transform
-- [ ] create_partition
+- [X] create_partition
 - [ ] create_script
 - [ ] create_security_configuration
 - [X] create_table
@@ -3404,7 +3404,7 @@
 - [ ] get_crawlers
 - [ ] get_data_catalog_encryption_settings
 - [X] get_database
-- [ ] get_databases
+- [X] get_databases
 - [ ] get_dataflow_graph
 - [ ] get_dev_endpoint
 - [ ] get_dev_endpoints
@@ -3418,7 +3418,7 @@
 - [ ] get_ml_task_runs
 - [ ] get_ml_transform
 - [ ] get_ml_transforms
-- [ ] get_partition
+- [X] get_partition
 - [ ] get_partitions
 - [ ] get_plan
 - [ ] get_resource_policy
@@ -3470,8 +3470,8 @@
 - [ ] update_dev_endpoint
 - [ ] update_job
 - [ ] update_ml_transform
-- [ ] update_partition
-- [ ] update_table
+- [X] update_partition
+- [X] update_table
 - [ ] update_trigger
 - [ ] update_user_defined_function
 - [ ] update_workflow