Add template index and language templates (Python, JavaScript, Java, Go, Rust)

gitignore_generator/templates/templates.json

@@ -0,0 +1,39 @@
+{
+    "languages": [
+        "python",
+        "javascript",
+        "java",
+        "go",
+        "rust",
+        "cpp",
+        "csharp",
+        "ruby",
+        "php",
+        "typescript",
+        "swift",
+        "kotlin",
+        "scala",
+        "dart",
+        "r",
+        "perl",
+        "lua",
+        "haskell",
+        "elixir",
+        "clojure",
+        "dotnet",
+        "ocaml",
+        "rust-cargo",
+        "terraform",
+        "ansible",
+        "docker",
+        "kubernetes"
+    ],
+    "ides": [
+        "vscode",
+        "jetbrains",
+        "visualstudio",
+        "vim",
+        "emacs"
+    ],
+    "custom": []
+}