add routes to get all albums and artists with sort

+ rewrite load all albums + artist logic with itertools.groupby
+ add a function to convert seconds to string

app/utils/__init__.py

@@ -0,0 +1,11 @@
+import locale
+
+# Set to user's default locale:
+locale.setlocale(locale.LC_ALL, "")
+
+# Or set to a specific locale:
+# locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
+
+
+def format_number(number: float) -> str:
+    return locale.format_string("%d", number, grouping=True)