build/dev: add tests to vscode tasks

.vscode/launch.json

@@ -18,6 +18,23 @@
                 }
             ],
             "preLaunchTask": "build"
+        },
+        {
+            "name": "tests",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/build/opendht_unit_tests",
+            "cwd": "${workspaceFolder}/build",
+            "environment": [],
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Enable pretty-printing for gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ],
+            "preLaunchTask": "build"
         }
     ]
 }

.vscode/tasks.json

@@ -23,6 +23,7 @@
                 "-DCMAKE_BUILD_TYPE=Debug",
                 "-DOPENDHT_PROXY_CLIENT=On",
                 "-DOPENDHT_PROXY_SERVER=On",
+                "-DOPENDHT_TESTS=On",
                 "-DOPENDHT_C=On"
             ],
             "dependsOn": "builddir"