add build tasks

.vscode/c_cpp_properties.json

+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "c11",
+            "cppStandard": "c++20",
+            "intelliSenseMode": "gcc-x64",
+            "compileCommands": "/home/cyrille/ros2_ws/build/ros_pralin_interfaces/compile_commands.json"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file

.vscode/tasks.json

+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "build ros_pralin_interfaces",
+      "type": "shell",
+      "command": "cd ~/ros2_ws; colcon build --cmake-args -DCMAKE_EXPORT_COMPILE_COMMANDS=On --paths src/ros_pralin_interfaces",
+      "group": "build",
+      "presentation": {
+        "clear": true
+      }
+    }
+  ]
+}
\ No newline at end of file