Improve getting started doc (#19138)

- improves
`packages/twenty-docs/developers/extend/apps/getting-started.mdx`

---------

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

packages/twenty-sdk/src/cli/operations/execute.ts

@@ -15,6 +15,7 @@ export type FunctionExecuteOptions = {
   remote?: string;
   payload?: Record<string, unknown>;
 } & (
+  | { preInstall: true }
   | { postInstall: true }
   | { functionUniversalIdentifier: string }
   | { functionName: string }
@@ -38,6 +39,7 @@ const belongsToApplication = (
 };
 
 const resolveIdentifier = (options: FunctionExecuteOptions): string => {
+  if ('preInstall' in options) return 'pre install';
   if ('postInstall' in options) return 'post install';
   if ('functionUniversalIdentifier' in options)
     return options.functionUniversalIdentifier;
@@ -90,6 +92,12 @@ const innerFunctionExecute = async (
   );
 
   const targetFunction = appFunctions.find((logicFunction) => {
+    if ('preInstall' in options && options.preInstall) {
+      return (
+        logicFunction.universalIdentifier ===
+        manifest.application.preInstallLogicFunctionUniversalIdentifier
+      );
+    }
     if ('postInstall' in options && options.postInstall) {
       return (
         logicFunction.universalIdentifier ===