introduce script to generate assembly animation. still needs cleanup

rack/assembly/addMagnetsToMagnetModules.scad

@@ -0,0 +1,25 @@
+include <./common.scad>
+
+$vpt = [21,-15,20];
+$vpr = [65,0,40];
+$vpd = 50;
+$vpf = 22.50;
+
+addMagnetsToMagnetModules(at=$t);
+
+module addMagnetsToMagnetModules(at=0) {
+  t = lerp(a=8,b=0,t=at);
+
+  if (!plasticMask) {
+    magnetModule();
+  }
+
+  function insertMagnetTrans(t=0) =
+    translate(v=[sideWallConnW-(magnetFaceToSideWallConnOuterYEdge+magnetHSlacked) + t,
+      magnetModuleMagnetMountDy,
+      magnetModuleMagnetMountDz]) *
+    rotate(a=[0,90,0]);
+
+  multmatrix(insertMagnetTrans(t=t))
+    magnet();
+}