Migrate website to monorepo (#1962)

* Adds website as a submodule

* Added website to monorepo

* Adds script to depliy submodules on Vercel

* Updates website

* Updates vercel script

* Sets default branch name as main

* Update website

* Cleanup git logs in Vercel

* Update website

* Update website

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "apps/website"]
+	path = apps/website
+	url = git@github.com:calcom/website.git