Refactor tenant ORM integration (#1650)

* Refactor tenant ORM integration

* fix tests

server/src/tenant/metadata/field-metadata/field-metadata.entity.ts

@@ -0,0 +1,42 @@
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  JoinColumn,
+  ManyToOne,
+  PrimaryGeneratedColumn,
+  UpdateDateColumn,
+} from 'typeorm';
+
+import { ObjectMetadata } from 'src/tenant/metadata/object-metadata/object-metadata.entity';
+
+@Entity('field_metadata')
+export class FieldMetadata {
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Column({ nullable: false, name: 'object_id' })
+  objectId: string;
+
+  @Column({ nullable: false })
+  type: string;
+
+  @Column({ nullable: false })
+  name: string;
+
+  @Column({ default: false, name: 'is_custom' })
+  isCustom: boolean;
+
+  @Column({ nullable: false, name: 'workspace_id' })
+  workspaceId: string;
+
+  @ManyToOne(() => ObjectMetadata, (object) => object.fields)
+  @JoinColumn({ name: 'object_id' })
+  object: ObjectMetadata;
+
+  @CreateDateColumn({ name: 'created_at' })
+  createdAt: Date;
+
+  @UpdateDateColumn({ name: 'updated_at' })
+  updatedAt: Date;
+}