reorganized code into separate files

util/validators/agentsCrowdObjective.m

@@ -0,0 +1,11 @@
+function c = agentsCrowdObjective(objective, positions, protectedRange)
+    arguments (Input)
+        objective (1, 1) {mustBeA(objective, 'sensingObjective')};
+        positions (:, 3) double; % this could be expanded to handle n obstacles in 1 call
+        protectedRange (1, 1) double;
+    end
+    arguments (Output)
+        c (:, 1) logical;
+    end
+    c = vecnorm(positions(:, 1:2) - objective.groundPos, 2, 2) <= protectedRange;
+end