Upgrade micropython tests to use v1.22, initial circuitpython work

tools/Dockerfile.circuitpython

@@ -0,0 +1,24 @@
+FROM ubuntu:22.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG VERSION=main
+ENV VERSION=$VERSION
+
+RUN apt-get update && \
+    apt-get install -y build-essential libffi-dev git pkg-config python3 && \
+    rm -rf /var/lib/apt/lists/* && \
+    git clone https://github.com/adafruit/circuitpython.git && \
+    cd circuitpython && \
+    git checkout $VERSION && \
+    git submodule update --init lib tools frozen && \
+    cd mpy-cross && \
+    make && \
+    cd .. && \
+    cd ports/unix && \
+    make && \
+    make install && \
+    apt-get purge --auto-remove -y  build-essential libffi-dev git pkg-config python3 && \
+    cd ../../.. && \
+    rm -rf circuitpython
+
+CMD ["/usr/local/bin/micropython"]