Reduce size of web font directory

[maxxcrawford]

Solution: Update font directory to match the Protocol library. It will require some font-weight size changes. Using the same trusty du -sh command, that folder is only 1.6 MB.

Note – The current font directory (before #2210) is currently at 3.3 MB

From @pdehaan: Looks like the /public/fonts/Inter/* directory is ~5.2 MB (per the rarely reliable du -sh public/fonts/).

ls -lhd public/fonts/Inter/* | awk '{ print $5 "\t" $9 }'

135K	public/fonts/Inter/Inter-Black.woff
101K	public/fonts/Inter/Inter-Black.woff2
143K	public/fonts/Inter/Inter-BlackItalic.woff
106K	public/fonts/Inter/Inter-BlackItalic.woff2
140K	public/fonts/Inter/Inter-Bold.woff
103K	public/fonts/Inter/Inter-Bold.woff2
147K	public/fonts/Inter/Inter-BoldItalic.woff
109K	public/fonts/Inter/Inter-BoldItalic.woff2
139K	public/fonts/Inter/Inter-ExtraBold.woff
104K	public/fonts/Inter/Inter-ExtraBold.woff2
147K	public/fonts/Inter/Inter-ExtraBoldItalic.woff
109K	public/fonts/Inter/Inter-ExtraBoldItalic.woff2
137K	public/fonts/Inter/Inter-ExtraLight.woff
102K	public/fonts/Inter/Inter-ExtraLight.woff2
146K	public/fonts/Inter/Inter-ExtraLightItalic.woff
109K	public/fonts/Inter/Inter-ExtraLightItalic.woff2
141K	public/fonts/Inter/Inter-Italic.woff
104K	public/fonts/Inter/Inter-Italic.woff2
137K	public/fonts/Inter/Inter-Light.woff
102K	public/fonts/Inter/Inter-Light.woff2
147K	public/fonts/Inter/Inter-LightItalic.woff
109K	public/fonts/Inter/Inter-LightItalic.woff2
139K	public/fonts/Inter/Inter-Medium.woff
103K	public/fonts/Inter/Inter-Medium.woff2
147K	public/fonts/Inter/Inter-MediumItalic.woff
110K	public/fonts/Inter/Inter-MediumItalic.woff2
131K	public/fonts/Inter/Inter-Regular.woff
 97K	public/fonts/Inter/Inter-Regular.woff2
139K	public/fonts/Inter/Inter-SemiBold.woff
103K	public/fonts/Inter/Inter-SemiBold.woff2
148K	public/fonts/Inter/Inter-SemiBoldItalic.woff
109K	public/fonts/Inter/Inter-SemiBoldItalic.woff2
133K	public/fonts/Inter/Inter-Thin.woff
 97K	public/fonts/Inter/Inter-Thin.woff2
142K	public/fonts/Inter/Inter-ThinItalic.woff
104K	public/fonts/Inter/Inter-ThinItalic.woff2
239K	public/fonts/Inter/Inter-italic.var.woff2
222K	public/fonts/Inter/Inter-roman.var.woff2
317K	public/fonts/Inter/Inter.var.woff2

Even if you only loaded .woff2 files, it's still ~2.6 MB of fonts. https://runkit.com/pdehaan/60f8aa92bd094a001bc1d24b

Originally posted by @pdehaan in https://github.com/mozilla/blurts-server/issues/2211#issuecomment-884554224