New language: BBCode

[RokeJulianLockhart]

This replaces @Janmm14's github.com/github-linguist/linguist/issues/3516:

Please see the guidelines to add support for a new language to Linguist. If bbcode meets the requirement on in-the-wild usage, don't hesitate to open a pull request.

Language name

BBCode

URL of example repository

gist.github.com/betaveros/48588f5443ea664e3912/6d2a86a3d426a2f94b8b1d2671fa572fc3119e2c

It's utilized extensively across phpBB and vBulletin forums, so its primary use case is in code snippets.

URL of syntax highlighting grammar

KDE's Kate IDE	github.com/Ernir/Kate-bbcode/blob/c325f2ea03d59c10257ba61c9aea6b6386c4b5c9/bbcode.xml
highlightjs	github.com/highlightjs/highlightjs-bbcode/blob/e4b537ab2fb0594061200dcf60df506cec3edbb7/bbcode.js#L1-L38

vim.org/scripts/script.php?script_id=2109 exists too, for Vim.

Most popular extensions

bbcode would the tag used, since it doesn't use any file extensions.

Detected language

Currently, text/plain.