Refactor command menu items deprecated code (#19508)

- Removes the intermediate `CommandMenuItemConfig` /
`CommandConfigContext` / `CommandMenuItemDisplay` abstraction layers,
replacing them with a single `CommandMenuItemRenderer` that renders
directly from the command menu items from the backend
- Eliminates the server-items/ subdirectory by moving its contents
(hooks/, contexts/, states/, display/, edit/) up into the parent
command-menu-item/ module, removing an unnecessary nesting level.

packages/twenty-front/src/modules/command-menu-item/edit/utils/computeInsertPositionFromBounds.ts

@@ -0,0 +1,24 @@
+import { isDefined } from 'twenty-shared/utils';
+
+export const computeInsertPositionFromBounds = (
+  previousPosition: number | undefined,
+  nextPosition: number | undefined,
+): number => {
+  if (!isDefined(previousPosition) && isDefined(nextPosition)) {
+    return nextPosition - 1;
+  }
+
+  if (isDefined(previousPosition) && !isDefined(nextPosition)) {
+    return previousPosition + 1;
+  }
+
+  if (isDefined(previousPosition) && isDefined(nextPosition)) {
+    if (previousPosition === nextPosition) {
+      return previousPosition - 1;
+    }
+
+    return (previousPosition + nextPosition) / 2;
+  }
+
+  return 0;
+};