chore: Add support for github codespaces (#249)

Author: jespertheend

Diff for: .devcontainer/Dockerfile

@@ -0,0 +1,10 @@
+ARG VARIANT=bullseye
+FROM --platform=linux/amd64 mcr.microsoft.com/devcontainers/base:0-${VARIANT}
+
+ENV DENO_INSTALL=/deno
+RUN mkdir -p /deno \
+    && curl -fsSL https://deno.land/x/install/install.sh | sh \
+    && chown -R vscode /deno
+
+ENV PATH=${DENO_INSTALL}/bin:${PATH} \
+    DENO_DIR=${DENO_INSTALL}/.cache/deno

Diff for: .devcontainer/devcontainer.json

@@ -0,0 +1,7 @@
+{
+	"name": "Deno",
+ 	"build": {
+		"dockerfile": "Dockerfile"
+	},
+	"remoteUser": "vscode"
+}