feat: validate actions configuration definition #4375

Job	Run time
Installing & Building	2m 15s
Build API Reference	1m 3s
Lint commit messages	15s
Linting & Testing (agent)	1m 36s
Linting & Testing (datasource-customizer)	1m 10s
Linting & Testing (datasource-dummy)	32s
Linting & Testing (datasource-mongoose)	1m 31s
Linting & Testing (datasource-sequelize)	39s
Linting & Testing (datasource-sql)	2m 30s
Linting & Testing (datasource-toolkit)	49s
Linting & Testing (forestadmin-client)	1m 6s
Linting & Testing (plugin-aws-s3)	33s
Linting & Testing (plugin-export-advanced)	28s
Linting & Testing (plugin-flattener)	29s
Send Coverage	16s
Publish API Reference	0s
Release packages	0s
	15m 12s

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