C3 language added (#3748)

Author: aliaegik

CHANGES.md

@@ -8,6 +8,7 @@ Improvements:
 New Grammars:
 
 - added 3rd party Lang grammar to SUPPORTED_LANGUAGES [AdamRaichu][]
+- added 3rd party C3 grammar to SUPPORTED_LANGUAGES [aliaegik][]
 
 Grammars:
 
@@ -27,6 +28,7 @@ Parser:
 
 - add removePlugin api [faga295][]
 
+[aliaegik]: https://github.com/aliaegik
 [Josh Goebel]: https://github.com/joshgoebel
 [Timur Kamaev]: https://github.com/doiftrue
 [Leopard20]: https://github.com/Leopard20/

SUPPORTED_LANGUAGES.md

@@ -40,6 +40,7 @@ The table below shows the full list of languages (and corresponding classes/alia
 | C                       | c, h                   |         |
 | C++                     | cpp, hpp, cc, hh, c++, h++, cxx, hxx |   |
 | C/AL                    | cal                    |         |
+| C3                      | c3                     | [highlightjs-c3](https://github.com/highlightjs/highlightjs-c3) |
 | Cache Object Script     | cos, cls               |         |
 | Candid                  | candid, did            | [highlightjs-motoko](https://github.com/rvanasa/highlightjs-motoko) |
 | CMake                   | cmake, cmake.in        |         |