Add Hex Color Support

[APickledWalrus]

Description

This is a remake of #3078, which I had to close because the conflicts had gotten too complicated for me to fix.
This PR adds hex color support to Skript through a new "color" tag. I have updated the documentation appropriately. Unlike #3078, the tag should work everywhere now. I had to make some changes to EffActionBar for colors to work properly there.

This is kind of outside of this PR, but Skript doesn't allow you to do:
send title "<RED>Hello %player%!"
"RED" must be in lowercase. I'm not sure if this is intentional or not though.
The cause is:

Skript/src/main/java/ch/njol/skript/util/Utils.java

Line 526 in 558e9c6

SkriptColor color = SkriptColor.fromName("" + m.group(1));

in that the string isn't converted to lowercase ("RED" doesn't exist in the map, but "red" does).

---

Target Minecraft Versions: 1.16+
Requirements: 1.16+
Related Issues: Fixes #3106

[APickledWalrus]

Okay, so I removed the need to format it with "color/hex/c" so you can just write:
send "<#123456>Hey there %player%"

It should be working better now, however it doesn't currently work in tooltips. Not sure if that is something on my end or with Skript/Components

EDIT: Test failed, but it wasn't an issue with this PR.

[APickledWalrus]

With that commit, tooltips are now properly colored and the linked issue has been fixed.
This PR should be ready now, although some changes to the new documentation could be made (perhaps use <code> tags?)

[FranKusmiruk]

LGTM but I believe we had an issue by using bungee chat API internally in some Spigot versions that didn't ship with it, are you sure this works all the way down 1.9.4?

[APickledWalrus]

LGTM but I believe we had an issue by using bungee chat API internally in some Spigot versions that didn't ship with it, are you sure this works all the way down 1.9.4?

That will need tested, but I would assume so since EffActionBar uses it. The BungeeConverter class is also used in EffMessage without any sort of version check.

EDIT: Made the change I mentioned above to the documentation and updated the check.

[FranKusmiruk]

Further testing will be done by users in the future betas, thanks for the contribution.

[Thrasilias]

Okay, so I removed the need to format it with "color/hex/c" so you can just write:
send "<#123456>Hey there %player%"

It should be working better now, however it doesn't currently work in tooltips. Not sure if that is something on my end or with Skript/Components

EDIT: Test failed, but it wasn't an issue with this PR.

stolen code fom my translator :omegaconcernPanda:

[APickledWalrus]

@Thrasilias wat

[Thrasilias]

That was sarcasme. I use <#rrggbb> in my own java code :)