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-json.json

@@ -1,9 +1,9 @@
 {
   "url": "https://github.com/tree-sitter/tree-sitter-json",
-  "rev": "d3976b27df8622ed17bef6dd5e358b398e73c676",
-  "date": "2020-05-14T14:59:27-07:00",
-  "path": "/nix/store/ds2wnlrh289rsnjx828h3jy1706g3x21-tree-sitter-json",
-  "sha256": "1cbhsmzbjni0mynjcai6gshhg16nls82v9lcihxf350dz57f7sax",
+  "rev": "89607925e8989f2638cc935b8de7e44ac3c91907",
+  "date": "2021-03-04T14:55:58-08:00",
+  "path": "/nix/store/xpykb8mr4xarh6finzkz71z2bpqm8k26-tree-sitter-json",
+  "sha256": "06pjh31bv9ja9hlnykk257a6zh8bsxg2fqa54al7qk1r4n9ksnff",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false