moved tube and sheet code to mesh folder

src/mol-geo/mesh/mesh-builder.ts

@@ -13,8 +13,8 @@ import { Cylinder, CylinderProps } from '../primitive/cylinder';
 import { Sphere, SphereProps } from '../primitive/sphere';
 import { Mesh } from './mesh';
 import { getNormalMatrix } from '../util';
-import { addSheet } from '../primitive/sheet';
-import { addTube } from '../primitive/tube';
+import { addSheet } from './sheet';
+import { addTube } from './tube';
 import { StarProps, Star } from '../primitive/star';
 import { Octahedron, PerforatedOctahedron } from '../primitive/octahedron';
 import { Primitive } from '../primitive/primitive';

src/mol-geo/primitive/sheet.ts → src/mol-geo/mesh/sheet.ts

@@ -7,7 +7,7 @@
 
 import { Vec3 } from 'mol-math/linear-algebra';
 import { ChunkedArray } from 'mol-data/util';
-import { MeshBuilderState } from '../mesh/mesh-builder';
+import { MeshBuilderState } from './mesh-builder';
 
 const tA = Vec3.zero()
 const tB = Vec3.zero()