[BUG] Colab doesn't have IDLE

[sdatkinson]

Installing NAM into Colab. This should take a couple seconds.
  Running command git clone --filter=blob:none --quiet https://github.com/sdatkinson/neural-amp-modeler.git /tmp/pip-req-build-37xz1ag8
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
[<ipython-input-2-6ba1aeaf40c5>](https://localhost:8080/#) in <cell line: 17>()
     15 from typing import Optional
     16 
---> 17 from nam.train.colab import run
     18 from nam.models.metadata import GearType, ToneType, UserMetadata
     19 

2 frames
[/usr/local/lib/python3.10/dist-packages/nam/train/gui/__init__.py](https://localhost:8080/#) in <module>
     21 from enum import Enum
     22 from functools import partial
---> 23 from idlelib.tooltip import Hovertip
     24 from pathlib import Path
     25 from tkinter import filedialog

ModuleNotFoundError: No module named 'idlelib'

Suggested fix: Add as a dependency (what if local users run into the same issue?)