[M] Change in coreboot[master]: Docs: Add page for external resources

[Martin L Roth (Code Review)]

Attention is currently required from: Felix Singer, Maximilian Brune.

Martin L Roth has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/70239 )

Change subject: Docs: Add page for external resources
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Patch Set 1:

(1 comment)

Patchset:

PS1: 
Kind of a proof-of-concept right now.  I expect that we'll add a fair number of links to this eventually.  Maybe at some point we'll need an 'external_resources' folder with sub-pages.

If there are any links that you want added, you can either edit this patch directly or make a comment, and I'll add them.