Enable nudging the selection via shift+arrow keys and shift+command+arrow keys to nudge more (close #7186)

No longer nudge the viewport with shift+arrow keys

data/core.yaml

@@ -2053,6 +2053,8 @@ en:
         split: "Split a line into two at the selected node"
         reverse: "Reverse selected features"
         move: "Move selected features"
+        nudge: "Nudge selected features"
+        nudge_more: "Nudge selected features by a lot"
         rotate: "Rotate selected features"
         orthogonalize: "Square corners of a line or area"
         straighten: "Straighten a line or points"

data/shortcuts.json

@@ -269,6 +269,18 @@
             "shortcuts": ["operations.move.key"],
             "text": "shortcuts.editing.operations.move"
           },
+          {
+            "modifiers": ["⇧"],
+            "shortcuts": ["↓", "↑", "←", "→"],
+            "text": "shortcuts.editing.operations.nudge",
+            "separator": ","
+          },
+          {
+            "modifiers": ["⌘", "⇧"],
+            "shortcuts": ["↓", "↑", "←", "→"],
+            "text": "shortcuts.editing.operations.nudge_more",
+            "separator": ","
+          },
           {
             "shortcuts": ["operations.rotate.key"],
             "text": "shortcuts.editing.operations.rotate"