Use new StarRecord class for StarStore objects

[C0rn3j]

Refactor StarStore to use class object instead of a list.

Removes flags parameter as it was only used for loving a track, now there's a boolean.

Removes an unused album variable.

Fixes breaking really old migrations, as star_store wasn't being loaded before migration was being processed.

Fixes a bug where the list had an incorrect amount of values, breaking loving a track:

2025-05-18 01:57:27 [CRITICAL] [  t_main  ] [1069.17647152688, '', 0] (t_main.py:15846)
Exception in thread Thread-16 (love):
Traceback (most recent call last):
  File "/usr/lib/python3.13/threading.py", line 1041, in _bootstrap_inner
    self.run()
    ~~~~~~~~^^
  File "/usr/lib/python3.13/threading.py", line 992, in run
    self._target(*self._args, **self._kwargs)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/tauon/t_modules/t_main.py", line 15846, in love
    star[3] = time.time()
    ~~~~^^^
IndexError: list assignment index out of range