feat(cli): add focused ws padding cmds

This commit adds dedicated komorebic commands for setting the padding
values of the focused workspace and containers.

re #570

komorebi-core/src/lib.rs

@@ -102,8 +102,10 @@ pub enum SocketMessage {
     FocusNamedWorkspace(String),
     ContainerPadding(usize, usize, i32),
     NamedWorkspaceContainerPadding(String, i32),
+    FocusedWorkspaceContainerPadding(i32),
     WorkspacePadding(usize, usize, i32),
     NamedWorkspacePadding(String, i32),
+    FocusedWorkspacePadding(i32),
     WorkspaceTiling(usize, usize, bool),
     NamedWorkspaceTiling(String, bool),
     WorkspaceName(usize, usize, String),