add an html converter

[bamarni]

It should be a stateful converter, all style instructions would be registered until something actually needs to be written on the receipt, the text would be wrapped inside a span tag. The init command would reset the states.

For example :

ALIGN RIGHT
COLOR RED

PRINTLF value

INIT

PRINT value2

PRINTRAW
value4
value5
>>>

CUT

Would result in :

<span style="text-align: right; color: red;">value</span>

<br />

<span>value2</span>

<div style="text-align: right; color: red;">
value4<br />
value5
</div>

<hr />

For barcodes (#1), this library could be used to generate images to be displayed : https://github.com/boombuler/barcode

Multiple spaces should be replaced by  .