Add missing language parsers

[mattmassicotte]

Right now, only Swift, OCaml, Go, and Markdown are included. Missing:

Bash
C
C++
C#
Clojure
CSS
Diff
Elixir
Elm
go mod
Haskell
HCL
HTML
Java
JavaScript
JSON
Julia
Lua
Perl
PHP
Python
Ruby
Rust
Scala
SQL
TypeScript
YAML
Zig

[mattmassicotte]

Clojure, Elixir, Go, Python, Ruby, Rust all have extensions. Makes sense to start with those first.

[mattmassicotte]

af70d7a adds elixir support

[mattmassicotte]

3388faf for Go

[mattmassicotte]

Ok languages with extensions are done, except for Ruby. It's extension is quite complex and I'm not sure exactly how to support it or if it is worth it. Right now.

[unnamedd]

List of supported languages

	Language	Issue	Commit Hash
✓	Bash		3191f22
✓	C
	C++
	C#
✓	Clojure		c46e12e
✓	CSS	#24
	Diff
✓	Elixir		af70d7a
	Elm
✓	Go		3388faf
✓	mod
	Haskell
	HCL
✓	HTML	#23
	Java
✓	JavaScript	#26
✓	JSON	#25
	Julia
	Lua
✓	Markdown
✓	OCaml
	Perl
	PHP
✓	Python		756c53c
✓	Ruby		44eecf1
✓	Rust	#22	6593137
	Scala
	SQL
✓	Swift
✓	TypeScript		a7ba9e0
	TOML
	YAML
	Zig