moved utils/utils.nf into workflows to simplify directory structure

Author: krokicki

workflows/registration.nf

@@ -17,7 +17,7 @@ include {
 
 include {
     index_channel;
-} from '../utils/utils'
+} from './utils'
 
 workflow registration {
     take:

workflows/segmentation.nf

@@ -1,6 +1,6 @@
 include {
     index_channel;
-} from '../utils/utils'
+} from './utils'
 
 include {
     predict;

workflows/spot_extraction.nf

@@ -7,7 +7,7 @@ include {
 
 include {
     index_channel;
-} from '../utils/utils'
+} from './utils'
 
 workflow spot_extraction {
     take:

workflows/stitching.nf

@@ -28,7 +28,7 @@ include {
 
 include {
     index_channel;
-} from '../utils/utils'
+} from './utils'
 
 /**
  * prepares the work and output directories and invoke stitching