add medium field config

Author: confusedlama

src/bitbots_misc/bitbots_parameter_blackboard/config/fields/german_open_2026_medium/config.yaml

@@ -0,0 +1,19 @@
+############################
+# RoboCup German Open 2024 #
+############################
+
+# Settings for the RoboCup German Open 2024 field
+
+parameter_blackboard:
+  ros__parameters:
+    field:
+      size:
+        x: 8.93
+        y: 5.94
+        padding: 1.0   # Padding (area outside of the lines) of the field in all directions
+      markings:
+        penalty_area:
+          size:
+            x: 1.93   # The distance from the goal line to the boundary of the penalty area
+      goal:
+        width: 2.5   # The width of the goal (center of one goal post to the other goal post)