add method and route to search across tracks, albums and artists.

+ break models into separate files
+ same for the utils and setup

app/models/artist.py

@@ -0,0 +1,41 @@
+import dataclasses
+import json
+from dataclasses import dataclass
+
+from app.utils.hashing import create_hash
+
+
+@dataclass(slots=True)
+class Artist:
+    """
+    Artist class
+    """
+
+    name: str
+    artisthash: str = ""
+    image: str = ""
+    trackcount: int = 0
+    albumcount: int = 0
+    duration: int = 0
+    colors: list[str] = dataclasses.field(default_factory=list)
+    is_favorite: bool = False
+
+    def __post_init__(self):
+        self.artisthash = create_hash(self.name, decode=True)
+        self.image = self.artisthash + ".webp"
+        self.colors = json.loads(str(self.colors))
+
+
+@dataclass(slots=True)
+class ArtistMinimal:
+    """
+    ArtistMinimal class
+    """
+
+    name: str
+    artisthash: str = ""
+    image: str = ""
+
+    def __post_init__(self):
+        self.artisthash = create_hash(self.name, decode=True)
+        self.image = self.artisthash + ".webp"