tree-sitter: 1.18.2 -> 0.19.3

Update the grammars and add `allGrammars` derivation.
`nix-build "<nixpkgs>" -A tree-sitter.allGrammars` will create a
derivation with symlinks to all the grammars

pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-lua.json

@@ -1,9 +1,9 @@
 {
-  "url": "https://github.com/nvim-treesitter/tree-sitter-lua",
-  "rev": "97b757ad3546d68dc1131e6ffb9b1d2a750eea29",
-  "date": "2020-11-25T21:23:57+01:00",
-  "path": "/nix/store/irz0dikk9dahkayi41chcznqq1i3wr84-tree-sitter-lua",
-  "sha256": "1nhg139vk3xm6ip4mhr29z0rprfg4q417z2vlvkz3m9wp8gppzls",
+  "url": "https://github.com/Azganoth/tree-sitter-lua",
+  "rev": "a943944ec09c5e96f455bb166079de4ef3534457",
+  "date": "2020-12-27T00:15:24-03:00",
+  "path": "/nix/store/6glr8p3x58pva0nn586dk5jwb3bpgqrj-tree-sitter-lua",
+  "sha256": "0pm6wwb3kv73bfvvshdmvazcb1is5x1z6jwr31gz0niln18nqvpb",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false