Add Tag documentation

[dmulcahey]

Proposed change

This PR adds docs for the Tag integration

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logo's and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: [RFC] Add Tag integration core#38727
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue:

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

[Hedda]

@dmulcahey Noticed that this component in PR home-assistant/core#38727 was renamed from "NFC Tags" to "Tag" which is much more generic. Just wondering now if this is still meant specific for NFC (Near-Field Communication) tags standard only or is this also meant to cover tags using other Radio-Frequency Identification (RFID) protocols and standards as well?

[balloob]

Good for now. We will extend it once we get some actual features built on top of it.