* started work on icons section

* replace pdfkit with jsPDF to avoid issues with blob-stream and to make pdf download work

* trying to use dynamic import for jsPDF to fix gatsby build issues

* update to node 16

* Remove hero on icons page

* Fix TextInput icon positioning

* Update headings

* Update icon page

* Move icon data to GraphQL layer

* Use graphql to fetch icon data

* "Icon overview" → "Overview"

* Fetch current version of octicons

* Update releases link

* Remove comments

* Fix fetch endpoint

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Co-authored-by: Cole Bemis <colebemis@github.com>