Add JSON_Stream helper

Author: tannewt

.gitmodules

@@ -956,3 +956,6 @@
 [submodule "libraries/helpers/usb_host_descriptors"]
 	path = libraries/helpers/usb_host_descriptors
 	url = https://github.com/adafruit/Adafruit_CircuitPython_USB_Host_Descriptors.git
+[submodule "libraries/helpers/json_stream"]
+	path = libraries/helpers/json_stream
+	url = https://github.com/adafruit/Adafruit_CircuitPython_JSON_Stream.git

docs/drivers.rst

@@ -119,6 +119,7 @@ Helpers for interfacing with the internet, including IoT protocols.
 
     Fake Requests <https://docs.circuitpython.org/projects/fakerequests/en/latest/>
     HTTP Server <https://docs.circuitpython.org/projects/httpserver/en/latest/>
+    JSON Stream <https://docs.circuitpython.org/projects/json_stream/en/latest/>
     JSON Web Token (JWT) <https://docs.circuitpython.org/projects/jwt/en/latest/>
     MiniMQTT <https://docs.circuitpython.org/projects/minimqtt/en/latest/>
     NTP (Network time Protocol) <https://docs.circuitpython.org/projects/ntp/en/latest/>