cmake_command: Rename to cmake_language
After discussion on discourse we decided to rename cmake_command()
to cmake_language()
since the EVAL CODE
signature operates on the whole language and not just one command. It also avoids ambiguity with the CMAKE_COMMAND
variable.
We also decided to rename the INVOKE
mode to CALL
because without the name _commmand
in preceding it, INVOKE
is not clear what it is invoking.