MAPG-2 Init project MapGuesser

* add composer.json and basic environment
 * add basic classes
 * add basic map with JS and CSS (with demo functionality)
 * add files for docker-compose
 * add launch.json for Docker debug
 * add README

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Listen for XDebug in Docker",
+            "type": "php",
+            "request": "launch",
+            "port": 9000,
+            "pathMappings": {
+                "/var/www/mapguesser": "${workspaceRoot}",
+            }
+        }
+    ]
+}