Add PeopleProvider.get_profile_by_xuid method

[misiektoja]

Adds get_profile_by_xuid to PeopleProvider for single-user profile lookups using the /users/me/people/xuids({xuid}) endpoint.

Returns relationship metadata (isFriend, canBeFriended etc.) from the caller's perspective, useful for profile lookups and relationship checks.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.35%. Comparing base (d03cead) to head (7ec4d1c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #108      +/-   ##
==========================================
+ Coverage   88.31%   88.35%   +0.03%     
==========================================
  Files          54       54              
  Lines        2868     2876       +8     
==========================================
+ Hits         2533     2541       +8     
  Misses        335      335              

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[tr4nt0r]

Looks really good, just a little comment

[tr4nt0r]

I just realized that in the profile provider we already have a get_profile_by_xuid, so in terms of Xbox API profile seems to be a different thing. What do you think of get_friend_by_xuid (singular)? That should make clear that it returns only a single friend with the same data as the other get_friends_* methods

Suggested change

	async def get_profile_by_xuid(self, xuid: str, decoration_fields: list[PeopleDecoration] | None = None, **kwargs) -> PeopleResponse:
	async def get_friend_by_xuid(self, xuid: str, decoration_fields: list[PeopleDecoration] | None = None, **kwargs) -> PeopleResponse:

[misiektoja]

I just realized that in the profile provider we already have a get_profile_by_xuid, so in terms of Xbox API profile seems to be a different thing. What do you think of get_friend_by_xuid (singular)?

You're absolutely right and it's a good catch! Having two methods with the same name in different providers would be confusing for users of the library. Fixed!

[tr4nt0r]

LGTM 👍🏼

Thanks for your contribution 🤗