Firefox: Always create profile directories

[Rosuavio]

Description

If a profile is made but with not attributes set. e.g.

    profiles.Foo = {
      id = 0;
      isDefault = true;
    };

then

[Profile0]
Default=1
IsRelative=1
Name=Foo
Path=Foo

is written into {firefoxConfigPath}/profiles.ini
but no Foo dir is created in firefoxConfigPath

This causes Firefox to throw an error at runtime and make it unusable.

This makes the dir regardless.

Checklist

• Change is backwards compatible.

• Code formatted with ./format.

• Code tested through nix-shell --pure tests -A run.all.

• Test cases updated/added. See example.

• Commit messages are formatted like

  {component}: {description}
  
  {long description}
  

  See CONTRIBUTING for more information and recent commit messages for examples.

• If this PR adds a new module

  • Added myself as module maintainer. See example.

  • Added myself and the module files to .github/CODEOWNERS.

[rycee]

Thanks! Looks OK to me. Just please follow the commit message guidelines: https://nix-community.github.io/home-manager/index.html#sec-commit-style

Something like perhaps

firefox: always create profile directories

[more description wrapped at ~72 chars]

[Rosuavio]

@rycee, it should be good now!

[rycee]

Thanks! Merged to master now. I squashed the commits and fixed the commit message (there must be an empty line between the subject and the descriptive text).