Add default relation to standard object on custom object in manifest (#18033)

add default relation fields when creating an object from an application

---------

Co-authored-by: prastoin <paul@twenty.com>

packages/twenty-shared/src/metadata/utils/add-custom-suffix-if-reserved.util.ts

@@ -0,0 +1,9 @@
+import { RESERVED_METADATA_NAME_KEYWORDS } from '@/metadata';
+
+export const addCustomSuffixIfIsReserved = (name: string): string => {
+  if (!name) return name;
+
+  return RESERVED_METADATA_NAME_KEYWORDS.includes(name)
+    ? `${name}Custom`
+    : name;
+};

packages/twenty-shared/src/metadata/utils/compute-metadata-name-from-label.util.ts

@@ -0,0 +1,33 @@
+import { addCustomSuffixIfIsReserved } from '@/metadata/utils/add-custom-suffix-if-reserved.util';
+import camelCase from 'lodash.camelcase';
+import { slugify } from 'transliteration';
+
+export const computeMetadataNameFromLabel = ({
+  label,
+  applyCustomSuffix = true,
+}: {
+  label: string;
+  applyCustomSuffix?: boolean;
+}): string => {
+  if (!label) return '';
+
+  const prefixedLabel = /^\d/.test(label) ? `n${label}` : label;
+
+  if (prefixedLabel === '') return '';
+
+  const formattedString = slugify(prefixedLabel, {
+    trim: true,
+    separator: '_',
+    allowedChars: 'a-zA-Z0-9',
+  });
+
+  if (formattedString === '') {
+    throw new Error(`Invalid label: "${label}"`);
+  }
+
+  const computedName = camelCase(formattedString);
+
+  return applyCustomSuffix
+    ? addCustomSuffixIfIsReserved(computedName)
+    : computedName;
+};