Add metadata migration setup (#1674)

* Add metadata migration setup

* add migration generator

* fix missing 'mocks'

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Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>

server/src/tenant/metadata/data-source-metadata/data-source-metadata.entity.ts

@@ -23,8 +23,8 @@ export class DataSourceMetadata {
   @Column({ type: 'enum', enum: ['postgres'], default: 'postgres' })
   type: DataSourceType;
 
-  @Column({ nullable: true })
-  name: string;
+  @Column({ nullable: true, name: 'display_name' })
+  displayName: string;
 
   @Column({ default: false, name: 'is_remote' })
   isRemote: boolean;