Implement a protected context for public usage in TypoScript
[FEATURE] Implement a protected context for restricted method calls
A whitelisting approach enables protection of arbitrary methods that
can be called through an Eel context. A new interface allows for dynamic
policies of allowed methods which is useful for operations in FlowQuery.
The behaviour of the existing Context implementation is not changed.
Reviewed-by: Christopher Hlubek
Tested-by: Christopher Hlubek
Tested-by: Mr. Hudson
Reviewed-by: Aske Ertmann
Tested-by: Aske Ertmann
Reviewed-by: Jacob Floyd
Reviewed-by: Christian Mueller
Tested-by: Christian Mueller