Drop BarcodeLib dependency

[primo-ppcg]

Drops the BarcodeLib dependency.

Fixes #145
Fixes #154
Fixes #170

Additionally:

• Code39 and I2of5 now support variable WideToNarrow ratio.
• EAN13 interpretation lines now respect chosen font face.
• EAN13 are no longer drawn with a white background.

This PR will likely remain in draft status until the next release of ZXing.NET, as I am waiting on the resolution of a few issues:
micjahn/ZXing.Net#503
micjahn/ZXing.Net#504

[YipingRuan]

@primo-ppcg
Should this PR remain "work in progress"?

[primo-ppcg]

@primo-ppcg Should this PR remain "work in progress"?

Unfortunately, Code128 barcodes containing a space will cause an error with the current version of ZXing.Net (micjahn/ZXing.Net#504). This is due to a bug in the parent project that's also been corrected (zxing/zxing#1658). This PR unfortunately cannot be merged until the next version of ZXing.Net is released.

[ivanjx]

any progress? all the external issues mentioned are fixed.

[primo-ppcg]

It's becoming a long wait for the next release of ZXing.NET. I'm going to get some of the open PRs merged and rework this for all barcodes except Code 128.

[YipingRuan]

@primo-ppcg
Thank you, will you also include the SixLabors.ImageSharp fixes, like #223 ?

[primo-ppcg]

@primo-ppcg Thank you, will you also include the SixLabors.ImageSharp fixes, like #223 ?

For sure, as per the github advisory.