feat(coderd/templatebuilder): author initial module catalog for 19 modules (#26194)

> [!NOTE]
> This PR was authored by Coder Agents on behalf of @jeremyruppel.

Runs the `scripts/modulegen` generator against the coder/registry to produce the initial module catalog for the template builder. Generates `module.json` and `.tf.tmpl` files for 19 modules across four categories:

- **IDE**: code-server, jetbrains, vscode-desktop, vscode-web, cursor, windsurf, zed, kiro
- **AI Agent**: claude-code, aider, goose, amazon-q
- **Source Control**: git-clone, git-config, git-commit-signing
- **Utility**: dotfiles, personalize, filebrowser, jupyterlab

Also updates `catalog_test.go` to validate the new embedded modules load correctly.

coderd/templatebuilder/modules/zed/module.json

@@ -0,0 +1,54 @@
+{
+  "id": "zed",
+  "display_name": "Zed",
+  "description": "Add a one-click button to launch Zed",
+  "icon": "/icon/zed.svg",
+  "category": "IDE",
+  "tags": [
+    "ide",
+    "zed",
+    "editor"
+  ],
+  "compatible_os": [
+    "linux"
+  ],
+  "conflicts_with": [],
+  "pinned_version": "1.1.4",
+  "variables": [
+    {
+      "name": "agent_id",
+      "type": "string",
+      "description": "The ID of a Coder agent",
+      "required": false,
+      "sensitive": false,
+      "computed": true
+    },
+    {
+      "name": "agent_name",
+      "type": "string",
+      "description": "The name of the agent",
+      "default": "",
+      "required": false,
+      "sensitive": false,
+      "computed": false
+    },
+    {
+      "name": "folder",
+      "type": "string",
+      "description": "The folder to open in Zed",
+      "default": "",
+      "required": false,
+      "sensitive": false,
+      "computed": false
+    },
+    {
+      "name": "settings",
+      "type": "string",
+      "description": "JSON encoded settings.json",
+      "default": "",
+      "required": false,
+      "sensitive": false,
+      "computed": false
+    }
+  ]
+}