ci: adds a dev container configuration

Signed-off-by: Vincent Biret <vibiret@microsoft.com>

Author: baywet

.devcontainer/devcontainer.json

@@ -0,0 +1,11 @@
+{
+  "name": "OpenAPI.NET",
+  "image": "mcr.microsoft.com/devcontainers/dotnet:10.0",
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "ms-dotnettools.csdevkit"
+      ]
+    }
+  }
+}

.github/dependabot.yml

@@ -28,3 +28,8 @@ updates:
         update-types:
           - version-update:semver-major
           - version-update:semver-minor
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    open-pull-requests-limit: 10
+    schedule:
+      interval: "daily"