fix(config): align border opts in st/dyn configs

This commit aligns the border option naming and arguments between the
dynamic and static configuration approaches.

The previously named border_width and border_offset options in the
static config will be replaced by active_window_border_width and
active_window_border_offset in v0.1.19.

Similarly the option for the offset will now take a single signed
integer, as it does when using the komorebic command.

re #526

komorebic/src/main.rs

@@ -1452,7 +1452,7 @@ fn main() -> Result<()> {
                     "'--config=\"{}\"'",
                     path.as_os_str()
                         .to_string_lossy()
-                        .trim_start_matches(r#"\\?\"#),
+                        .trim_start_matches(r"\\?\"),
                 ));
             }