docs(mkdocs): add updates for v0.1.28 features

docs/cli/border-implementation.md

@@ -0,0 +1,20 @@
+# border-implementation
+
+```
+Set the border implementation
+
+Usage: komorebic.exe border-implementation <STYLE>
+
+Arguments:
+  <STYLE>
+          Desired border implementation
+
+          Possible values:
+          - komorebi: Use the adjustable komorebi border implementation
+          - windows:  Use the thin Windows accent border implementation
+
+Options:
+  -h, --help
+          Print help (see a summary with '-h')
+
+```