Add metadata migration setup (#1674)

* Add metadata migration setup

* add migration generator

* fix missing 'mocks'

---------

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

server/src/tenant/metadata/entity-schema-generator/entity-schema-generator.service.ts

@@ -22,13 +22,13 @@ export class EntitySchemaGeneratorService {
 
     const entities = objectMetadata.map((object) => {
       return new EntitySchema({
-        name: object.name,
+        name: object.targetTableName,
         columns: {
           ...baseColumns,
           ...object.fields.reduce((columns, field) => {
             return {
               ...columns,
-              [sanitizeColumnName(field.name)]: {
+              [sanitizeColumnName(field.targetColumnName)]: {
                 type: convertFieldTypeToPostgresType(field.type),
                 nullable: true,
               },