DOCS: add launch.json and mention poetry config

Signed-off-by: Paliak <91493239+Paliak@users.noreply.github.com>

Author: Paliak

.vscode/launch.json

@@ -0,0 +1,17 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+        "name": "pingtop debug",
+        "type": "python",
+        "request": "launch",
+        "program": "${workspaceFolder}/src/pingtop/cli.py",
+        "justMyCode": false,
+        "args": ["google.com"],
+        "python": "${workspaceFolder}/.venv/bin/python",
+        "cwd": "${workspaceFolder}",
+        //"console": "externalTerminal",
+        //"sudo": true
+    }
+  ]
+}

README.rst

@@ -206,6 +206,8 @@ Then widen the allowed range so your user or group can open ICMP sockets:
 Development
 -----------
 
+You may need to set `poetry config virtualenvs.in-project true` for the included vscode launch.json to work.
+
 ::
 
    poetry install