Meteo france

[fabaff]

Description:

Move the Meteo France integration to a directory.

Follow-up of #18404

Example entry for configuration.yaml (if applicable):

meteo_france:
  - city: 'paris'
    monitored_conditions:
      - rain_chance
      - freeze_chance
      - thunder_chance
      - snow_chance

CC @victorcerutti

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

If the code communicates with devices, web services, or third-party tools:

• New dependencies have been added to the REQUIREMENTS variable ([example][ex-requir]).
• New dependencies are only imported inside functions that use them ([example][ex-import]).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

[MartinHjelmare]

Thanks!

[MartinHjelmare]

We can merge after the conflicts are resolved.