More progress re: #34

- Change of direction, LRCLib searches from /lyric/search now use internal cache - which is a PGSQL import of the LRCLib SQLite database.  Change to PGSQL was made for performance.

lyric_search/constructors.py

@@ -1,5 +1,5 @@
 from dataclasses import dataclass
-from typing import Union, Optional
+from typing import Union
 
 
 @dataclass
@@ -22,25 +22,6 @@ class LyricsResult:
     time: float = 0.00
 
 
-@dataclass
-class LRCLibResult:
-    """
-    Class for returned Lyrics Results
-    Attributes:
-        id (int): returned id
-        artist (str): returned artist
-        song (str): returned song
-        plainLyrics (str): returned (plain) lyrics
-        syncedLyrics (str): returned synchronizedLyrics
-    """
-
-    id: int
-    artist: str
-    song: str
-    plainLyrics: Optional[str] = None
-    syncedLyrics: Optional[str] = None
-
-
 """
 Generic
 """