New high level barcode method. Closes #245, #244. (#527)

* Merge software and hardware barcodes to one method

* Fix wrong sw barcode heigh/width

* Add missing param to _sw_barcode call

* Make barcode() smarter, improvements and clean up

* Use param font_size in sw_barcode()

* Update docstrings

* Update barcode examples and docs

* Add --force_software option to CLI

* Attempt to match the sw and hw barcode sizes

* Better approximation to native font size

* Fix docs build

* Update tests at test_function_softbarcode

* Fix exception

* Move image dpi setting to writter_options

* Fix _sw_barcode() docstring param

* Fix wrong default param in docstring

* improve linkage in documentation

---------

Co-authored-by: Patrick Kanzler <4189642+patkan@users.noreply.github.com>
Co-authored-by: Patrick Kanzler <dev@pkanzler.de>

src/escpos/cli.py

@@ -161,6 +161,11 @@ ESCPOS_COMMANDS = [
                 "help": "ESCPOS function type",
                 "choices": ["A", "B"],
             },
+            {
+                "option_strings": ("--force_software",),
+                "help": "Force render and print barcode as an image",
+                "choices": ["graphics", "bitImageColumn", "bitImageRaster"],
+            },
         ],
     },
     {