Speed up adding tracks from playlist

[nznaza]

Changed Playlist addTrack embed messages, to send them in one batch, speeding up adding tracks from a playlist.
Changed youtube playlist lookup function to avoid searching a known playlist url

[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.82%.

Quality metrics	Before	After	Change
Complexity	14.41 🙂	15.16 🙂	0.75 👎
Method Length	137.36 😞	138.54 😞	1.18 👎
Working memory	11.87 😞	11.80 😞	-0.07 👍
Quality	43.86% 😞	43.04% 😞	-0.82% 👎

Other metrics	Before	After	Change
Lines	517	532	15

Changed files	Quality Before	Quality After	Quality Change
Cogs/events.py	42.31% 😞	42.31% 😞	0.00%
Cogs/play.py	54.94% 🙂	55.15% 🙂	0.21% 👍
Cogs/skip.py	48.43% 😞	48.43% 😞	0.00%
Tools/addTrack.py	8.87% ⛔	9.78% ⛔	0.91% 👍

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
Tools/addTrack.py	addTrack	38 ⛔	726 ⛔	21 ⛔	9.78% ⛔	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions
Cogs/events.py	EventsCog.on_command_error	16 🙂	489 ⛔	15 😞	27.53% 😞	Try splitting into smaller methods. Extract out complex expressions
Cogs/events.py	EventsCog.on_voice_state_update	20 😞	245 ⛔	14 😞	31.02% 😞	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions
Cogs/play.py	CogPlay.play	24 😞	277 ⛔	10 😞	33.49% 😞	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions
Cogs/skip.py	CogSkip.skip	8 ⭐	300 ⛔	14 😞	38.75% 😞	Try splitting into smaller methods. Extract out complex expressions

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• ⛔ very poor

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