feat(cli): add favorite/unfavorite commands (#11793)

cli/testdata/coder_--help.golden

@@ -22,6 +22,7 @@ SUBCOMMANDS:
     dotfiles          Personalize your workspace by applying a canonical
                       dotfiles repository
     external-auth     Manage external authentication
+    favorite          Add a workspace to your favorites
     list              List workspaces
     login             Authenticate with Coder deployment
     logout            Unauthenticate your local session
@@ -47,6 +48,7 @@ SUBCOMMANDS:
     stop              Stop a workspace
     templates         Manage templates
     tokens            Manage personal access tokens
+    unfavorite        Remove a workspace from your favorites
     update            Will update and start a given workspace if it is out of
                       date
     users             Manage users

cli/testdata/coder_favorite_--help.golden

@@ -0,0 +1,11 @@
+coder v0.0.0-devel
+
+USAGE:
+  coder favorite <workspace>
+
+  Add a workspace to your favorites
+
+  Aliases: fav, favourite
+
+———
+Run `coder --help` for a list of global options.

cli/testdata/coder_unfavorite_--help.golden

@@ -0,0 +1,11 @@
+coder v0.0.0-devel
+
+USAGE:
+  coder unfavorite <workspace>
+
+  Remove a workspace from your favorites
+
+  Aliases: unfav, unfavourite
+
+———
+Run `coder --help` for a list of global options.