Added vscode devcontainer, cpp include configuration and vscode tasks

.devcontainer/Dockerfile

@@ -0,0 +1,5 @@
+FROM achreto/barrelfish-aos:20.04-lts
+
+RUN apt update && apt install -y vim
+
+RUN adduser vscode --disabled-password

.devcontainer/devcontainer.json

@@ -0,0 +1,20 @@
+{
+	"name": "AOS Barrelfish",
+	
+	"build": {
+		"dockerfile": "Dockerfile",
+	},
+
+	"containerEnv": {
+		"BFAOS": "${containerWorkspaceFolder}",
+		"BFBUILD": "${containerWorkspaceFolder}/build",
+	},
+
+	"extensions": [
+		"ms-azuretools.vscode-docker",
+		"ms-vscode.cpptools-extension-pack",
+	],
+
+	"remoteUser": "vscode",
+}
+

.vscode/c_cpp_properties.json

@@ -0,0 +1,13 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "${workspaceFolder}/include/**",
+                "${BFBUILD}/armv8/include/**"
+            ]
+        }
+    ],
+    "version": 4
+}

.vscode/tasks.json

@@ -0,0 +1,24 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+      {
+        "label": "Initialize Build Directory",
+        "type": "shell",
+        "command": "mkdir -p ${BFBUILD} && cd build && ${BFAOS}/hake/hake.sh -s ${BFAOS} && make -j7 QEMU",
+        "group": {
+          "kind": "build",
+          "isDefault": true
+        }
+      },
+      {
+        "label": "Build and Run QEMU",
+        "type": "shell",
+        "command": "cd build && make qemu_a57",
+        "group": {
+          "kind": "build",
+          "isDefault": true
+        }
+      }
+    ]
+  }
+