feat: simplification of default-value specification in FieldMetadata (#4592)

* feat: wip refactor default-value

* feat: health check to migrate default value

* fix: tests

* fix: refactor defaultValue to make it more clean

* fix: unit tests

* fix: front-end default value

packages/twenty-server/src/engine/metadata-modules/field-metadata/validators/is-quoted-string.validator.ts

@@ -0,0 +1,24 @@
+import {
+  ValidationArguments,
+  ValidationOptions,
+  registerDecorator,
+} from 'class-validator';
+
+export function IsQuotedString(validationOptions?: ValidationOptions) {
+  return function (object: object, propertyName: string) {
+    registerDecorator({
+      name: 'isQuotedString',
+      target: object.constructor,
+      propertyName: propertyName,
+      options: validationOptions,
+      validator: {
+        validate(value: any) {
+          return typeof value === 'string' && /^'.*'$/.test(value);
+        },
+        defaultMessage(args: ValidationArguments) {
+          return `${args.property} must be a quoted string`;
+        },
+      },
+    });
+  };
+}