feat(cli): add stackbar-mode command

This commit adds a new komorebic command "stackbar-mode" to allow users
to change stackbar modes programmatically.

docs/cli/check.md

@@ -3,9 +3,12 @@
 ```
 Check komorebi configuration and related files for common errors
 
-Usage: komorebic.exe check
+Usage: komorebic.exe check [OPTIONS]
 
 Options:
+  -k, --komorebi-config <KOMOREBI_CONFIG>
+          Path to a static configuration JSON file
+
   -h, --help
           Print help
 

docs/cli/stackbar-mode.md

@@ -0,0 +1,18 @@
+# stackbar-mode
+
+```
+Set the stackbar mode
+
+Usage: komorebic.exe stackbar-mode <MODE>
+
+Arguments:
+  <MODE>
+          Desired stackbar mode
+          
+          [possible values: always, never, on-stack]
+
+Options:
+  -h, --help
+          Print help
+
+```