[Audio] Handle Missing SQL deps more gracefully (#3066)

* Removes `MAX_BALANCE` from bank, user `bank.get_max_balance()` now
`[p]bankset maxbal` can be used to set the maximum bank balance

Signed-off-by: Guy <guyreis96@gmail.com>

* Remove duplicated call in `[p]playlist update`

Signed-off-by: guyre <27962761+drapersniper@users.noreply.github.com>

* Handle both ModuleNotFoundError and ImportError and pull a more complete error message to forward to the user and fix grammar.

Signed-off-by: guyre <27962761+drapersniper@users.noreply.github.com>

* Since we aren't 100% certain of message length here due to using the error message for the raised error ... lets use pagify so this doesn't bite us in the future.

Signed-off-by: guyre <27962761+drapersniper@users.noreply.github.com>

* .... Lets not reinvent the wheel

Signed-off-by: guyre <27962761+drapersniper@users.noreply.github.com>

* Address Jack's review

redbot/cogs/audio/apis.py

@@ -7,6 +7,7 @@ import logging
 import os
 import random
 import time
+import traceback
 from collections import namedtuple
 from typing import Callable, Dict, List, Mapping, NoReturn, Optional, Tuple, Union
 
@@ -15,11 +16,14 @@ try:
     from databases import Database
 
     HAS_SQL = True
-except ModuleNotFoundError:
+    _ERROR = None
+except ImportError as err:
+    _ERROR = "".join(traceback.format_exception_only(type(err), err)).strip()
     HAS_SQL = False
-    SQLError = ModuleNotFoundError
+    SQLError = err.__class__
     Database = None
 
+
 import aiohttp
 import discord
 import lavalink