Add gitpod configuration

.gitpod.Dockerfile

@@ -0,0 +1,13 @@
+FROM gitpod/workspace-full
+
+USER gitpod
+
+# Update Rust to the latest version
+RUN rm -rf ~/.rustup && ~/.cargo/bin/rustup update stable
+
+# Set up wasm-pack and wasm32-unknown-unknown for rustpython_wasm
+RUN export PATH=$HOME/.cargo/bin:$PATH && \
+    curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh && \
+    rustup target add wasm32-unknown-unknown
+
+USER root

.gitpod.yml

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+image:
+  file: .gitpod.Dockerfile