feat: Add agent role assignment and database CRUD tools for AI agent nodes (#12888)

This PR introduces a significant enhancement to the role-based
permission system by extending it to support AI agents, enabling them to
perform database operations based on assigned permissions.

## Key Changes

### 1. Database Schema Migration
- **Table Rename**: `userWorkspaceRole` → `roleTargets` to better
reflect its expanded purpose
- **New Column**: Added `agentId` (UUID, nullable) to support AI agent
role assignments
- **Constraint Updates**: 
- Made `userWorkspaceId` nullable to accommodate agent-only role
assignments
- Added check constraint `CHK_role_targets_either_agent_or_user`
ensuring either `agentId` OR `userWorkspaceId` is set (not both)

### 2. Entity & Service Layer Updates
- **RoleTargetsEntity**: Updated with new `agentId` field and constraint
validation
- **AgentRoleService**: New service for managing agent role assignments
with validation
- **AgentService**: Enhanced to include role information when retrieving
agents
- **RoleResolver**: Added GraphQL mutations for `assignRoleToAgent` and
`removeRoleFromAgent`

### 3. AI Agent CRUD Operations
- **Permission-Based Tool Generation**: AI agents now receive database
tools based on their assigned role permissions
- **Dynamic Tool Creation**: The `AgentToolService` generates CRUD tools
(`create_*`, `find_*`, `update_*`, `soft_delete_*`, `destroy_*`) for
each object based on role permissions
- **Granular Permissions**: Supports both global role permissions
(`canReadAllObjectRecords`) and object-specific permissions
(`canReadObjectRecords`)

### 4. Frontend Integration
- **Role Assignment UI**: Added hooks and components for
assigning/removing roles from agents

## Demo


https://github.com/user-attachments/assets/41732267-742e-416c-b423-b687c2614c82

---------

Co-authored-by: Antoine Moreaux <moreaux.antoine@gmail.com>
Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>
Co-authored-by: Charles Bochet <charles@twenty.com>
Co-authored-by: Guillim <guillim@users.noreply.github.com>
Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>
Co-authored-by: Weiko <corentin@twenty.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions <github-actions@twenty.com>
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Marie <51697796+ijreilly@users.noreply.github.com>
Co-authored-by: martmull <martmull@hotmail.fr>
Co-authored-by: Thomas Trompette <thomas.trompette@sfr.fr>
Co-authored-by: Etienne <45695613+etiennejouan@users.noreply.github.com>
Co-authored-by: Baptiste Devessier <baptiste@devessier.fr>
Co-authored-by: nitin <142569587+ehconitin@users.noreply.github.com>
Co-authored-by: Paul Rastoin <45004772+prastoin@users.noreply.github.com>
Co-authored-by: prastoin <paul@twenty.com>
Co-authored-by: Vicky Wang <157669812+vickywxng@users.noreply.github.com>
Co-authored-by: Vicky Wang <vw92@cornell.edu>
Co-authored-by: Raphaël Bosi <71827178+bosiraphael@users.noreply.github.com>

packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/ai-agent/ai-agent.workflow-action.ts

@@ -69,7 +69,7 @@ export class AiAgentWorkflowAction implements WorkflowExecutor {
         );
       }
 
-      const executionResult = await this.agentExecutionService.executeAgent({
+      const { result, usage } = await this.agentExecutionService.executeAgent({
         agent,
         context,
         schema: step.settings.outputSchema,
@@ -77,11 +77,13 @@ export class AiAgentWorkflowAction implements WorkflowExecutor {
 
       await this.aiBillingService.calculateAndBillUsage(
         agent.modelId,
-        executionResult.usage,
+        usage,
         workspaceId,
       );
 
-      return { result: executionResult.object };
+      return {
+        result,
+      };
     } catch (error) {
       if (error instanceof AgentException) {
         return {