feat: add hand/panning tool (#6141)

* feat: add hand/panning tool

* move hand tool right of tool lock separator

* tweak i18n

* rename `panning` -> `hand`

* toggle between last tool and hand on `H` shortcut

* hide properties sidebar when `hand` active

* revert to rendering HandButton manually due to mobile toolbar

src/locales/en.json

@@ -220,7 +220,8 @@
     "lock": "Keep selected tool active after drawing",
     "penMode": "Pen mode - prevent touch",
     "link": "Add/ Update link for a selected shape",
-    "eraser": "Eraser"
+    "eraser": "Eraser",
+    "hand": "Hand (panning tool)"
   },
   "headings": {
     "canvasActions": "Canvas actions",
@@ -228,7 +229,7 @@
     "shapes": "Shapes"
   },
   "hints": {
-    "canvasPanning": "To move canvas, hold mouse wheel or spacebar while dragging",
+    "canvasPanning": "To move canvas, hold mouse wheel or spacebar while dragging, or use the hand tool",
     "linearElement": "Click to start multiple points, drag for single line",
     "freeDraw": "Click and drag, release when you're finished",
     "text": "Tip: you can also add text by double-clicking anywhere with the selection tool",