Remove .vscode directory from .gitignore and add launch configuration for Flask and Pytest

.gitignore

@@ -4,4 +4,3 @@ __pycache__/
 .venv/
 venv/
 *.log
-.vscode/

.vscode/launch.json

@@ -0,0 +1,23 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Flask",
+            "type": "debugpy",
+            "request": "launch",
+            "module": "flask",
+            "env": {
+                "FLASK_APP": "app.py",
+                "FLASK_ENV": "development"
+            },
+            "args": ["run", "--host=0.0.0.0", "--port=5000"]
+        },
+        {
+            "name": "Pytest",
+            "type": "debugpy",
+            "request": "launch",
+            "module": "pytest",
+            "args": ["tests/", "-v"]
+        }
+    ]
+}