Added Dockerfile and .devcontainer (#855)

.devcontainer/Dockerfile

@@ -0,0 +1,8 @@
+FROM ubuntu:22.04
+RUN apt-get update && apt-get upgrade -y && \
+    apt-get install -y make wget xz-utils && \
+    wget -qO- "https://developer.arm.com/-/media/Files/downloads/gnu-a/10.2-2020.11/binrel/gcc-arm-10.2-2020.11-x86_64-arm-none-linux-gnueabihf.tar.xz?revision=d0b90559-3960-4e4b-9297-7ddbc3e52783&rev=d0b9055939604e4b92977ddbc3e52783&hash=0074C1529DE90C98726B80ED3EE0776C" | tar -xJ && \
+    mv gcc-arm-* /usr/local/bin && \
+    printf 'export PATH=$PATH:%s\n' /usr/local/bin/gcc-arm-*/bin >> ~/.bashrc && \
+    apt-get autoremove && apt-get clean && \
+    rm -rf ~/.cache /tmp/*

.devcontainer/devcontainer.json

@@ -0,0 +1,5 @@
+{
+  "build": {
+    "dockerfile": "Dockerfile"
+  }
+}