refactor: rename `controller` to `Controller` #12595

Job	Run time
Setup PHP Version for Code Coverage	1s
Others (8.1) / Sanity Tests	2m 31s
Others (8.2) / Sanity Tests	4m 13s
Others (8.3) / Sanity Tests	2m 48s
CacheLive (8.1) / Cache Live Tests	1m 56s
CacheLive (8.2) / Cache Live Tests	2m 22s
CacheLive (8.3) / Cache Live Tests	2m 2s
SeparateProcess (8.1) / tests	3m 20s
SeparateProcess (8.2) / tests	3m 42s
SeparateProcess (8.3) / tests	3m 32s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 41s
DatabaseLive (8.1, MySQLi, 8.0) / tests	4m 30s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 6s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 46s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 39s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	4m 21s
DatabaseLive (8.2, MySQLi, 8.0) / tests	4m 44s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 8s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 31s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 33s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 4s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 23s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 13s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 44s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 36s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	4m 10s
Upload coverage results to Coveralls / coveralls	53s
	1h 35m 29s

Provide feedback