Update changelog structure

Author: fioan89

CHANGELOG.md

@@ -1,14 +1,7 @@
 <!-- Keep a Changelog guide -> https://keepachangelog.com -->
 
-# Coder Gateway Changelog
+# code-gateway Changelog
 
 ## [Unreleased]
-
 ### Added
-
-* welcome screen
-* basic Coder Workspaces wizard triggered by the Coder's welcome view. It asks the user a Coder hostname, port, email and password,
-  authenticates with the Coder server and lists a collection of Workspaces created by the user.
-* back button to return to the main welcome view
-* basic Coder http client which authenticates, retrieves a session token and uses it to retrieve the Workspaces created by the
-  user that is logged.
+* initial scaffold for Gateway plugin