minor swyx dec updates

[swyxio]

just shuffling some of the text around for readability. no major additions or deletions.

• fold in gDSFP docs to class components
• fold in prop type examples to a single prop type examples file
• fold in Types or Interfaces? to single prop type examples file

i intend to start adding some videos soon. i've also applied for github sponsors to help fund this work.

[eps1lon]

Great examples! Some editorial notes that reduce jargon and "easy"/"just"/"simple" wording.