Added adaptive coding rate support and unit tests

Dockerfile.test

@@ -0,0 +1,43 @@
+# Minimal container to run PlatformIO native/portduino tests
+FROM ubuntu:22.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        python3 \
+        python3-pip \
+        git \
+        build-essential \
+        cmake \
+        pkg-config \
+        libssl-dev \
+        libncurses5 \
+        libsdl2-dev \
+        libx11-dev \
+        libxext-dev \
+        libusb-1.0-0-dev \
+        libyaml-cpp-dev \
+        libuv1-dev \
+        libgpiod-dev \
+        libbluetooth-dev \
+        libulfius-dev \
+        liborcania-dev \
+        libmicrohttpd-dev \
+        libjansson-dev \
+        libgnutls28-dev \
+        libcurl4-gnutls-dev \
+        libi2c-dev \
+        openssl \
+        lsb-release \
+        cppcheck \
+        uuid-dev \
+        zlib1g-dev \
+        libbsd-dev \
+        gdb \
+    && pip3 install --no-cache-dir platformio \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /workspace
+
+CMD ["bash"]