Barcode Scanning Updates (#448)

* Add new setting for controlling manual barcode scan

* Adds ability to pause and resume scanning with button

- Camera is still "live" during this

* Add UI elements

* Change scan setting

- "Continuous" scanning
- Enabled by default

* Update release notes

* Scanner updates

- Use "hold to pause" in continuous scan
- Use "tap to pause" in single scan

* Improve barcode scanning options

- Allow tap-to-pause or hold-to-pause
- More obvious user interactions

* Ensure consistent icon placement

* Remove separate setting for barcode pause mode

lib/l10n/app_en.arb

@@ -115,6 +115,12 @@
   "barcodeReceivePart": "Scan barcode to receive part",
   "@barcodeReceivePart": {},
 
+  "barcodeScanPaused": "Barcode scanning paused",
+  "@barodeScanPaused": {},
+
+  "barcodeScanPause": "Tap or hold to pause scanning",
+  "@barcodeScanPause": {},
+
   "barcodeScanAssign": "Scan to assign barcode",
   "@barcodeScanAssign": {},
 
@@ -139,6 +145,12 @@
   "barcodeScanLocation": "Scan stock location",
   "@barcodeScanLocation": {},
 
+  "barcodeScanSingle": "Single Scan Mode",
+  "@barcodeScanSingle": {},
+
+  "barcodeScanSingleDetail": "Pause barcode scanner after each scan",
+  "@barcodeScanSingleDetail": {},
+
   "barcodeScanIntoLocationSuccess": "Scanned into location",
   "@barcodeScanIntoLocationSuccess": {},