Bakes feature tree of frames to reduce file size

- Mesh cleanup in Onshape was performed to reduce file size of feeder frames
- Design history has been baked out to improve load times and model stability
- These changes should allow the feeder frames to be editable in FreeCAD 1.0 and above.

.gitattributes

@@ -0,0 +1 @@
+cad/FDM/frame-12.FCStd filter=lfs diff=lfs merge=lfs -text

cad/FDM/frame-12.FCStd

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:f43605cd3dd9d27934f568c9b7a677516b6b339e04575646872136073e0cad2c
-size 113715080
+oid sha256:1b3c29cb2c3021013454f8385aa59d5d9265677083d7f77d48a1440a828cebde
+size 2239142