feat: add email/smtp plain auth method #12989

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.1) / Sanity Tests	2m 37s
Others (8.2) / Sanity Tests	3m 47s
Others (8.4) / Sanity Tests	2m 28s
Others (8.3) / Sanity Tests	2m 33s
CacheLive (8.1) / Cache Live Tests	1m 59s
CacheLive (8.2) / Cache Live Tests	2m 45s
CacheLive (8.3) / Cache Live Tests	2m 10s
CacheLive (8.4) / Cache Live Tests	1m 57s
DatabaseLive (8.1, MySQLi, 5.7) / tests	2m 55s
DatabaseLive (8.1, MySQLi, 8.0) / tests	4m 40s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 35s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 40s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 55s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	4m 38s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 44s
DatabaseLive (8.2, OCI8, 8.0) / tests	6m 59s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 43s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 49s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 56s
SeparateProcess (8.1) / tests	3m 30s
SeparateProcess (8.2) / tests	4m 26s
SeparateProcess (8.3) / tests	3m 46s
SeparateProcess (8.4) / tests	3m 55s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 53s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 52s
DatabaseLive (8.3, Postgre, 8.0) / tests	3m 2s
DatabaseLive (8.3, SQLite3, 8.0) / tests	3m 21s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	4m 35s
DatabaseLive (8.4, MySQLi, 8.0) / tests	5m 48s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 32s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 44s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 47s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	5m 17s
Upload coverage results to Coveralls / coveralls	59s
	2h 13m 19s

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