Highlight if log comes from custom component

[balloob]

Breaking change

Proposed change

Improve logging panel:

• fall back to reading source path to extract integration if generic logger is used
• show in overview if it's a custom component
• show in detailed view if it's a custom component
• don't show a link to the documentation if the custom component links to the HA website as that is never correct, we don't ship custom components.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[spacegaier]

To make the line in the log details popup stand out more ("... originated from custom integration..."), we could in front of it add the same icon that will be used in PR #8911 as the custom integration indicator.

[balloob]

I don't think that it needs to stand-out more on the overview page, it's just something that needs to standout when you open the details. So I will add the icon to the overview page.

[balloob]