Release cli/v0.8.0

• plandex invite command to invite users to an org
• plandex users command to list users and pending invites for an org
• plandex revoke command to revoke an invite or remove a user from an org
• plandex sign-in fixes
• Fix for context update of directory tree when some paths are ignored
• Fix for plandex branches command showing no branches immediately after plan creation rather than showing the default 'main' branch