Refresh AI model setup (#13171)

Instead of initializing model at start time we do it at run time to be
able to swap model provider more easily.

Also introduce a third driver for openai-compatible providers, which
among other allows for local models with Ollama

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

@@ -1,8 +1,6 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 
-import { AiDriver } from 'src/engine/core-modules/ai/interfaces/ai.interface';
-
 import { AiModule } from 'src/engine/core-modules/ai/ai.module';
 import { AgentEntity } from 'src/engine/metadata-modules/agent/agent.entity';
 import { AgentModule } from 'src/engine/metadata-modules/agent/agent.module';
@@ -13,9 +11,7 @@ import { AiAgentWorkflowAction } from './ai-agent.workflow-action';
 @Module({
   imports: [
     AgentModule,
-    AiModule.forRoot({
-      useFactory: () => ({ type: AiDriver.OPENAI }),
-    }),
+    AiModule,
     TypeOrmModule.forFeature([AgentEntity], 'core'),
   ],
   providers: [ScopedWorkspaceContextFactory, AiAgentWorkflowAction],