add retries for genius/lrclib searches (tenacity) + reduce timeouts appropriately

lyric_search/sources/lrclib.py

@@ -6,6 +6,9 @@ import traceback
 import logging
 from typing import Optional, Union
 from aiohttp import ClientTimeout, ClientSession
+from tenacity import (
+    retry, stop_after_attempt, wait_fixed
+)
 from lyric_search import utils
 from lyric_search.constructors import LyricsResult
 from . import common, cache, redis_cache
@@ -22,12 +25,13 @@ class LRCLib:
         self.label: str = "LRCLib"
         self.lrclib_url: str = "https://lrclib.net/api/search"
         self.headers: dict = common.SCRAPE_HEADERS
-        self.timeout = ClientTimeout(connect=2, sock_read=4)
+        self.timeout = ClientTimeout(connect=2, sock_read=3)
         self.datautils = utils.DataUtils()
         self.matcher = utils.TrackMatcher()
         self.cache = cache.Cache()
         self.redis_cache = redis_cache.RedisCache()
 
+    @retry(stop=stop_after_attempt(2), wait=wait_fixed(0.5))
     async def search(
         self, artist: str, song: str, plain: Optional[bool] = True
     ) -> Optional[LyricsResult]: