More player updates

[itsTheFae]

• [x] I have tested my changes against the dev branch (the latest developmental version), and this pull request is targeting that branch as a base
• [x] I have tested my changes on Python 3.8 or higher
• [x] I have ensured my code is formatted using Black

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Description

This PR contains all the implementations for any groundwork in the previous three PRs.
Here is a list of features this PR should contain or make usable:

• Adds logic to check for updates to MusicBot via git and for dependencies via pip.
  • Adds new command checkupdates to print status about available updates.
• Improved security of subprocess command execution, to reduce command/shell injection risks.
• Updates blocklist feature and adds block list for songs as well as users.
  • Replaces old blacklist command with blockuser command.
  • Adds new command blocksong which works similarly to blockuser command.
  • Updates options.ini to replace or add block list options:
  • Replaces [Files] Blacklist with [Files] UserBlocklistFile option.
  • Adds [Files] SongBlocklistFile option.
  • Adds [MusicBot] EnableUserBlocklist to toggle the features. Default enabled.
  • Adds [MusicBot] EnableSongBlocklist to toggle the features. Default disabled.
• Adds playnow command to immediately play a track and move currently playing songs to the end of the queue.
• Auto playlist tracks are auto-skipped when a user adds a new song.
• Update the queue command to add pagination by both command arg and reactions.
• Allow listids and perms commands to fall back to sending in public if DM fails.
• Majority of function definitions now have some kind of doc string.
• Enforce code checks using Pylint and isort to reduce inconsistency and clean up code.
• Ensure source code complies with mypy checks, and fix various bugs on the way.
• Updates MusicBot logging to enable time-based log files and safely close the logs in most cases.
• Fixes possible issues with counting members in channel not respecting bot exceptions.
• Updates ConfigParser to provide extra parser methods rather than relying on validation later.
• Updates Permissions to also use extended ConfigParser methods, for consistency.
• Refactored the decorator methods to live in utils.py or be removed.

Related issues (if applicable)

Following this PR, and a little testing, these issues could be closed:

2376 #2375 #2340 #2238 #1829 #1587 #1462 #520 #249 and #69