Add DevContainer (#1608)

With DevContainer, developers can join the project without deploy the build env.

Signed-off-by: cyw3 <2927096163@qq.com>

.devcontainer/devcontainer.json

@@ -0,0 +1,12 @@
+{
+  "name": "dev environment",
+  "dockerFile": "Dockerfile",
+  "extensions": [
+    "bazelbuild.vscode-bazel",
+    "bierner.github-markdown-preview",
+    "daohong-emilio.yash",
+    "esbenp.prettier-vscode",
+    "llvm-vs-code-extensions.vscode-clangd",
+    "ms-python.python"
+  ]
+}