Fix: BlitzCliConfig does not work when blitz-server.ts is in /src/app directory (#4279)

* fix: search any subdirectly in `app/src` to find `blitz-server.ts`

* Create giant-knives-wonder.md

* Update packages/generator/src/generator.ts

Author: siddhsuresh

.changeset/giant-knives-wonder.md

@@ -0,0 +1,5 @@
+---
+"@blitzjs/generator": patch
+---
+
+Fix: search inside any subdirectory to inside `src|app` directories to find `blitz-server.ts` to use the `BlitzCliConfig` configurations.

packages/generator/src/generator.ts

@@ -35,7 +35,7 @@ export const customTemplatesBlitzConfig = async (
   codemod = false,
 ) => {
   const {globby} = await import("globby")
-  const blitzServer = await globby(["{app,src}/**/blitz-server.{ts,js}"], {
+  const blitzServer = await globby(["{app,src}/**/**/blitz-server.{ts,js}"], {
     cwd: getProjectRootSync(),
   })
   if (blitzServer.length === 0) {