Does not embed multiple font weights; not sensitive to CSS font-weight

[GrahamHannington]

Could you please enhance svg-buddy to embed multiple font weights (e.g. bold); ideally, also multiple font styles (e.g. italic)?

CSS snippet from an SVG file exported from CorelDRAW 2021:

.fnt1 {font-weight:normal;font-size:156.25px;font-family:'IBM Plex Sans'}
.fnt0 {font-weight:bold;font-size:156.25px;font-family:'IBM Plex Sans'}

svg-buddy embeds only the normal font weight:

 <style type="text/css"><![CDATA[@font-face {
    font-family:'IBM Plex Sans';
    src:url('data:application/font-woff2;charset=utf-8;base64,[base64-encoded-woff2-font]') format("woff2");
    font-weight:normal;
    font-style:normal;
}]]></style>

The browser displaying the SVG must approximate the bold weight ("faux bold").

While modern browsers are getting pretty good at this, it's not ideal.

If I zoom in on an SVG with this issue on my iPhone in Safari, I can see that Safari has attempted to approximate bold by closely overlapping two instances of the text in normal weight.

On older browsers, the approximation can look downright buggy.

[GrahamHannington]

For now, I'm using this to get the missing @font-face at-rules:

https://amio.github.io/embedded-google-fonts/

and then "manually" (using a text editor) inserting them into the SVG files.

[GrahamHannington]

I've belatedly realized that this issue is a duplicate—or at least, near-duplicate—of issue #4.