Compile with swc on twenty-server (#4863)

Experiment using swc instead of tsc (as we did the switch on
twenty-front)

It's **much** faster (at least 5x) but has stricter requirements.
I fixed the build but there's still an error while starting the server,
opening this PR for discussion.

Checkout the branch and try `nx build:swc twenty-server`

Read: https://docs.nestjs.com/recipes/swc#common-pitfalls

packages/twenty-server/src/engine/metadata-modules/relation-metadata/relation-metadata.entity.ts

@@ -6,6 +6,7 @@ import {
   ManyToOne,
   OneToOne,
   PrimaryGeneratedColumn,
+  Relation,
   UpdateDateColumn,
 } from 'typeorm';
 
@@ -65,7 +66,7 @@ export class RelationMetadataEntity implements RelationMetadataInterface {
       onDelete: 'CASCADE',
     },
   )
-  fromObjectMetadata: ObjectMetadataEntity;
+  fromObjectMetadata: Relation<ObjectMetadataEntity>;
 
   @ManyToOne(
     () => ObjectMetadataEntity,
@@ -74,21 +75,21 @@ export class RelationMetadataEntity implements RelationMetadataInterface {
       onDelete: 'CASCADE',
     },
   )
-  toObjectMetadata: ObjectMetadataEntity;
+  toObjectMetadata: Relation<ObjectMetadataEntity>;
 
   @OneToOne(
     () => FieldMetadataEntity,
     (field: FieldMetadataEntity) => field.fromRelationMetadata,
   )
   @JoinColumn()
-  fromFieldMetadata: FieldMetadataEntity;
+  fromFieldMetadata: Relation<FieldMetadataEntity>;
 
   @OneToOne(
     () => FieldMetadataEntity,
     (field: FieldMetadataEntity) => field.toRelationMetadata,
   )
   @JoinColumn()
-  toFieldMetadata: FieldMetadataEntity;
+  toFieldMetadata: Relation<FieldMetadataEntity>;
 
   @CreateDateColumn({ type: 'timestamptz' })
   createdAt: Date;