refactor: simplify TextMate grammar and add Darcula theme

Remove redundant class-definition pattern from grammar.
Add Darcula theme for consistent color scheme.

Author: yhk1038

src/main/resources/textmate-bundle/syntaxes/t-ruby.tmLanguage.json

@@ -7,7 +7,6 @@
     { "include": "#comments" },
     { "include": "#type-alias" },
     { "include": "#interface" },
-    { "include": "#class-definition" },
     { "include": "#function-definition" },
     { "include": "#function-definition-no-params" },
     { "include": "#method-call" },
@@ -67,28 +66,6 @@
         }
       ]
     },
-    "class-definition": {
-      "patterns": [
-        {
-          "name": "meta.class.t-ruby",
-          "match": "^\\s*(class)\\s+([A-Z]\\w*)(?:\\s*(<)\\s*([A-Z]\\w*))?",
-          "captures": {
-            "1": { "name": "keyword.declaration.class.t-ruby" },
-            "2": { "name": "entity.name.type.class.t-ruby" },
-            "3": { "name": "punctuation.definition.inheritance.t-ruby" },
-            "4": { "name": "entity.other.inherited-class.t-ruby" }
-          }
-        },
-        {
-          "name": "meta.module.t-ruby",
-          "match": "^\\s*(module)\\s+([A-Z]\\w*)",
-          "captures": {
-            "1": { "name": "keyword.declaration.module.t-ruby" },
-            "2": { "name": "entity.name.type.module.t-ruby" }
-          }
-        }
-      ]
-    },
     "interface-member": {
       "patterns": [
         {

src/main/resources/textmate-bundle/themes/t-ruby-darcula.json

@@ -0,0 +1,122 @@
+{
+  "name": "T-Ruby Darcula",
+  "type": "dark",
+  "tokenColors": [
+    {
+      "scope": [
+        "keyword",
+        "keyword.control",
+        "keyword.control.class",
+        "keyword.control.module",
+        "keyword.control.def",
+        "keyword.other.special-method",
+        "constant.language",
+        "constant.language.nil",
+        "constant.language.boolean",
+        "variable.language.self",
+        "storage",
+        "storage.type"
+      ],
+      "settings": {
+        "foreground": "#CC7832",
+        "fontStyle": "bold"
+      }
+    },
+    {
+      "scope": [
+        "entity.name.type",
+        "entity.name.type.class",
+        "entity.name.type.module",
+        "entity.name.function",
+        "entity.other.inherited-class",
+        "support.class",
+        "support.function"
+      ],
+      "settings": {
+        "foreground": "#FFC66D"
+      }
+    },
+    {
+      "scope": [
+        "string",
+        "string.quoted",
+        "string.quoted.double",
+        "string.quoted.single",
+        "string.quoted.double.interpolated",
+        "string.regexp"
+      ],
+      "settings": {
+        "foreground": "#6A8759"
+      }
+    },
+    {
+      "scope": [
+        "variable.other.readwrite.instance",
+        "variable.other.readwrite.class",
+        "variable.other.readwrite.global",
+        "variable.other.constant"
+      ],
+      "settings": {
+        "foreground": "#9876AA"
+      }
+    },
+    {
+      "scope": [
+        "comment",
+        "comment.line",
+        "comment.block"
+      ],
+      "settings": {
+        "foreground": "#808080",
+        "fontStyle": "italic"
+      }
+    },
+    {
+      "scope": [
+        "constant.numeric",
+        "constant.numeric.integer",
+        "constant.numeric.float"
+      ],
+      "settings": {
+        "foreground": "#6897BB"
+      }
+    },
+    {
+      "scope": [
+        "constant.language.symbol",
+        "constant.other.symbol"
+      ],
+      "settings": {
+        "foreground": "#A5C261"
+      }
+    },
+    {
+      "scope": [
+        "variable",
+        "meta.class",
+        "meta.module",
+        "punctuation",
+        "source"
+      ],
+      "settings": {
+        "foreground": "#A9B7C6"
+      }
+    },
+    {
+      "scope": [
+        "meta.embedded.line",
+        "punctuation.section.embedded"
+      ],
+      "settings": {
+        "foreground": "#CC7832"
+      }
+    },
+    {
+      "scope": "invalid.deprecated",
+      "settings": {
+        "foreground": "#FF6B68",
+        "fontStyle": "strikethrough"
+      }
+    }
+  ]
+}