adding sh1106

Author: FoamyGuy

.gitmodules

@@ -823,3 +823,6 @@
 [submodule "libraries/helpers/neokey"]
 	path = libraries/helpers/neokey
 	url = https://github.com/adafruit/Adafruit_CircuitPython_NeoKey.git
+[submodule "libraries/drivers/displayio_sh1106"]
+	path = libraries/drivers/displayio_sh1106
+	url = https://github.com/adafruit/Adafruit_CircuitPython_DisplayIO_SH1106.git

docs/drivers.rst

@@ -252,6 +252,7 @@ OLED
 
 .. toctree::
 
+    SH1106 OLED (displayio) <https://circuitpython.readthedocs.io/projects/displayio_sh1106/en/latest/>
     SH1107 OLED (displayio) <https://circuitpython.readthedocs.io/projects/displayio-sh1107/en/latest/>
     SSD1305 OLED (displayio) <https://circuitpython.readthedocs.io/projects/displayio_ssd1305/en/latest/>
     SSD1305 OLED (framebuf) <https://circuitpython.readthedocs.io/projects/ssd1305/en/latest/>