Added a CI job for WPCloud testing of wpcomsh. #67627

Job	Run time
Changelogger use	25s
detect changed files	7s
Changelogger validity	29s
Copied files are in sync	9s
Project structure	1m 17s
PHP lint (7.2)	34s
PHP Code Sniffer (non-excluded files only)	1m 54s
PHP lint (7.4)	35s
PHP Compatibility	1m 21s
PHP lint (8.0)	34s
PHP Code Sniffer (changes to excluded files only)	0s
PHP lint (8.1)	29s
PHP lint (8.2)	32s
PHP lint (8.3)	32s
ESLint (non-excluded files only)	0s
Lint GitHub Actions yaml files	27s
PHP lint (8.4)	32s
ESLint (changes to excluded files only)	0s
Check linter exclude lists	0s
Lock files are up to date	0s
Monorepo package version refs	0s
	9m 57s

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