Added tool calling support (#731)

Co-authored-by: krut_ni <nils.kruthoff@dlr.de>
Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Plugins/assistants/README.md

@@ -83,6 +83,7 @@ Each assistant plugin lives in its own directory under the assistants plugin roo
 - `ASSISTANT` is the root table. Every assistant requires `Title` and `Description`.
 - Form assistants additionally require `SystemPrompt`, `SubmitText`, `AllowProfiles`, and a nested `UI` definition.
 - Direct chat launchers instead require `LaunchBehavior = "OPEN_WORKSPACE_CHAT_BY_NAME"` and `WorkspaceName`. AI Studio stops reading the form-only fields as soon as a launch behavior is active, so older launchers that still carry them keep working.
+- `ToolIds` is optional for both kinds and names the tools the assistant runs with, such as `{"web_search"}`. When present, it must list at least one unique, non-empty tool ID; omit the field instead of writing an empty list. For a form assistant, naming tools takes the choice away from users: the tool selection disappears, and the assistant always runs with exactly these tools. For a launcher, the tools are merely preselected and users may change them once the chat is open. Naming a tool is a wish, not a permission: a tool switched off in the settings stays off, one whose settings are incomplete cannot run, and every tool still has to meet the confidence requirements of the provider in use. A tool ID unknown to the installation is skipped.
 - `DEPLOYED_USING_CONFIG_SERVER` identifies who manages the assistant plugin. Set it to `false` for locally managed plugins. A missing field is also treated as local for compatibility with existing plugins. Enterprise-distributed plugins must set it to `true` and cannot be revised with AI in AI Studio.
 - `AI_STUDIO_ASSISTANT_BUILDER = {Generated = true, SchemaVersion = 1}` is reserved for plugins generated by the AI Studio Assistant Builder. It enables Builder-specific actions such as safe deletion and must not be added to manually authored or enterprise-distributed assistants. Newly generated Builder assistants always set `DEPLOYED_USING_CONFIG_SERVER = false` explicitly.
 - `UI.Type` is always `"FORM"` and `UI.Children` is a list of component tables.
@@ -123,6 +124,9 @@ ASSISTANT = {
         "44444444-4444-4444-4444-444444444444",
         "55555555-5555-5555-5555-555555555555",
     },
+    ["ToolIds"] = { -- optional; preselects these tools in the opened chat
+        "web_search",
+    },
 }
 ```