Using better-auth for auth (#684)

* Swapped next-auth with better-auth

* Removed deprecate files

* Removed next-auth references from code base

* feat: update session handling to use `auth.api.getSession` and configure Jest for `better-auth` modules.

* Missed mock files

* Trusted origin for better-auth

* Removed unused vars

* Removed deprecated env var

* Fixed error message display

* Removed unused var

---------

Co-authored-by: Rajat <[email protected]>

Author: rajat1saxena

apps/web/__mocks__/better-auth.ts

@@ -0,0 +1 @@
+export default jest.fn();

apps/web/__mocks__/next-auth.ts

@@ -1,5 +1,3 @@
-import { auth } from "@/auth";
-import { SessionProvider } from "next-auth/react";
 import HomepageLayout from "./home-page-layout";
 import { headers } from "next/headers";
 import { getFullSiteSetup } from "@ui-lib/utils";
@@ -11,18 +9,11 @@ export default async function Layout({
     children: React.ReactNode;
 }) {
     const address = await getAddressFromHeaders(headers);
-    const [siteInfo, session] = await Promise.all([
-        getFullSiteSetup(address),
-        auth(),
-    ]);
+    const siteInfo = await getFullSiteSetup(address);
 
     if (!siteInfo) {
         return null;
     }
 
-    return (
-        <SessionProvider session={session}>
-            <HomepageLayout siteInfo={siteInfo}>{children}</HomepageLayout>
-        </SessionProvider>
-    );
+    return <HomepageLayout siteInfo={siteInfo}>{children}</HomepageLayout>;
 }