MatchError's should include the filename

[cognifloyd]

Whenever possible, we should include the filename and linenumber in the MatchError.

I also used the LINE_NUMBER_KEY const var instead of using "__line__".

This is minor and should not impact anyone now, but it makes fixing identified errors easier in #1805 (this was extracted from that PR).

[cognifloyd]

These rules do not provide linenumber because identifying the line would be fiddly or misleading:

• Meta rules can identify where galaxy_info is, but calculating line numbers for the contents of galaxy_info would be annoying and passing a linenumber for galaxy_info would be misleading.
  • MetaMainHasInfoRule
  • MetaTagValidRUle
  • MetaVideoLinksRule

[cognifloyd]

I also used the LINE_NUMBER_KEY const var instead of using "__line__".

[cognifloyd]

rebased on main

[ssbarnea]

@cognifloyd Please search for __line__ and __file__ and replace the few remaining occurences with the newly added key so we have it in a single place, consistent.

[cognifloyd]

Yup. I searched for __line__ and __file__. There is one other use of "__line__" but it is semantically different (an attribute instead of a dict key), and its use is isolated to one function in utils, so I didn't change that.

[cognifloyd]

The other instances of __file__ are the magic python var, not string constants.

[cognifloyd]

Here are the other uses of the string '__line__' (referring to an attribute instead of a key):
https://github.com/ansible-community/ansible-lint/blob/6df35484845627cb117320a221c7f3aac07f85b4/src/ansiblelint/utils.py#L715-L739

[tadeboro]

Thank you, @cognifloyd, for your contribution!