Add syntax highlighting and LSP (erlang_lsp) for Erlang (#7093)

This pull request implements support for the [Erlang
Language](https://erlang.org/).

**It adds:**

* [tree-sitter-erlang](https://github.com/WhatsApp/tree-sitter-erlang)
grammar
highlights (Licensed under Apache-2 from WhatsApp which is compatible
with Zed licensing model), folds and indents
* Erlang file icon based on the [official
one](https://www.erlang.org/doc/erlang-logo.png)
* [erlang_ls](https://github.com/erlang-ls/erlang_ls) support

Fixes https://github.com/zed-industries/zed/issues/4939, possibly a
duplicate of https://github.com/zed-industries/zed/pull/7085 with more
features. Suppose @wingyplus wants to join efforts here.

**To complete (out of scope for this PR):**

* Support for the ELP language server from WhatsApp. CC @robertoaloi
* Better indentation handling, need something like
`indentNextLinePattern` in VS Code

**Screenshots:**

![Screenshot 2024-01-30 at 11 03 51
AM](https://github.com/zed-industries/zed/assets/168440/5289c245-9edd-46b8-b443-d7b3210f6510)
![Screenshot 2024-01-30 at 11 01 19
AM](https://github.com/zed-industries/zed/assets/168440/bd22b322-5344-44e6-b5f7-6e352fb3deef)
![Screenshot 2024-01-30 at 11 01 37
AM](https://github.com/zed-industries/zed/assets/168440/f28f6a15-383e-4719-8a87-fceae5062436)
![Screenshot 2024-01-30 at 11 02 03
AM](https://github.com/zed-industries/zed/assets/168440/980d5213-0367-4a08-86eb-5743dfa628eb)
![Screenshot 2024-01-30 at 11 02 19
AM](https://github.com/zed-industries/zed/assets/168440/ea998891-604d-48d6-929f-ae4c1bb3fae1)

Outline: 
![Screenshot 2024-01-31 at 9 09 36
AM](https://github.com/zed-industries/zed/assets/168440/46d56d94-21c3-414d-84fb-9251fa2506ab)



**Release Notes:**

* Added Erlang Support
([7093](https://github.com/zed-industries/zed/pull/7093)).

---------

Signed-off-by: Thanabodee Charoenpiriyakij <wingyminus@gmail.com>
Co-authored-by: Thanabodee Charoenpiriyakij <wingyminus@gmail.com>

assets/icons/file_icons/erlang.svg

@@ -0,0 +1 @@
+<svg height="64" viewBox="0 0 128 128" width="64" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><linearGradient id="a" gradientUnits="userSpaceOnUse" x1="0" x2="128" y1="128" y2="0"><stop offset="0" stop-color="#333"/><stop offset="1" stop-color="#5d5d5d"/></linearGradient><path d="m12.239265 30.664279h14.960911c-5.59432 5.460938-7.654216 10.692785-10.342106 18.023379-3.200764 8.729348-.549141 29.987457 3.815534 37.55289 2.943384 5.101853 6.282685 8.994876 8.233522 11.095173h-16.667861zm89.614855 0h13.90661v66.671442h-13.55518c1.31391-1.750328 3.43934-4.534454 5.12085-6.426163 2.32782-2.618784 4.97023-6.978412 4.97023-6.978412l-16.015202-8.133112s-5.48977 11.600331-15.964999 15.964998c-10.475214 4.364666-19.784679-.838179-25.604243-7.530659-5.819578-6.692502-5.82371-22.14014-5.82371-22.14014h60.797524c1.16391-14.839892-2.63216-21.249816-4.66901-25.90547-.91799-2.098266-1.89261-3.810819-3.16287-5.522484zm-38.356164 1.757154c.35429-.01632.731685-.0092 1.104497 0 11.930114.290977 13.053143 12.802122 13.053143 12.802122h-27.311192s2.170772-12.298638 13.153552-12.802122z" fill="url(#a)"/></svg>

assets/icons/file_icons/file_types.json

@@ -1,7 +1,9 @@
 {
     "suffixes": {
+        "Emakefile": "erlang",
         "aac": "audio",
         "accdb": "storage",
+        "app.src": "erlang",
         "avif": "image",
         "bak": "backup",
         "bash": "terminal",
@@ -23,6 +25,8 @@
         "doc": "document",
         "docx": "document",
         "eex": "elixir",
+        "erl": "erlang",
+        "escript": "erlang",
         "eslintrc": "eslint",
         "eslintrc.js": "eslint",
         "eslintrc.json": "eslint",
@@ -37,17 +41,18 @@
         "gif": "image",
         "gitattributes": "vcs",
         "gitignore": "vcs",
-        "gitmodules": "vcs",
         "gitkeep": "vcs",
+        "gitmodules": "vcs",
         "go": "go",
         "h": "code",
         "handlebars": "code",
         "hbs": "template",
         "heex": "elixir",
         "heif": "image",
+        "hrl": "erlang",
+        "hs": "haskell",
         "htm": "template",
         "html": "template",
-        "hs": "haskell",
         "ib": "storage",
         "ico": "image",
         "ini": "settings",
@@ -85,6 +90,7 @@
         "psd": "image",
         "py": "python",
         "rb": "ruby",
+        "rebar.config": "erlang",
         "rkt": "code",
         "rs": "rust",
         "rtf": "document",
@@ -104,13 +110,15 @@
         "txt": "document",
         "vue": "vue",
         "wav": "audio",
-        "webp": "image",
         "webm": "video",
+        "webp": "image",
         "xls": "document",
         "xlsx": "document",
         "xml": "template",
+        "xrl": "erlang",
         "yaml": "yaml",
         "yml": "yaml",
+        "yrl": "erlang",
         "zlogin": "terminal",
         "zsh": "terminal",
         "zsh_aliases": "terminal",
@@ -133,7 +141,7 @@
             "icon": "icons/file_icons/folder.svg"
         },
         "css": {
-          "icon": "icons/file_icons/css.svg"
+            "icon": "icons/file_icons/css.svg"
         },
         "default": {
             "icon": "icons/file_icons/file.svg"
@@ -144,6 +152,9 @@
         "elixir": {
             "icon": "icons/file_icons/elixir.svg"
         },
+        "erlang": {
+            "icon": "icons/file_icons/erlang.svg"
+        },
         "eslint": {
             "icon": "icons/file_icons/eslint.svg"
         },