rename to cg_swap and added docs

docs/cg_swap.md

@@ -0,0 +1,13 @@
+# Ctrl Gui Swap
+This module allows to swap Ctrl with Gui and vice versa. This will reset on restart to the default implementation
+
+## Enabling the module
+```python
+from kmk.module.cg_swap import CgSwap
+# cg_swap disabled on startup
+cg_swap = CgSwap()
+# cg_swap enabled on startup
+# cg_swap = CgSwap(true)
+keyboard.modules.append(cg_swap)
+
+```

kmk/modules/cg_swap.py

@@ -2,7 +2,7 @@ from kmk.keys import KC, ModifierKey, make_key
 from kmk.modules import Module
 
 
-class SwapKeys(Module):
+class CgSwap(Module):
     # default cg swap is disabled, can be eanbled too if needed
     def __init__(self, cg_swap_enable=False):
         self.cg_swap_enable = cg_swap_enable