* added tutorials page and blog tutorial
* proof reading, some language improvements
* split blog tutorial into parts
and reworked on the basis of comments, improved language, added missing
things
* + custom slugify function example
* +blog tutorial on engagement
* + section blog ToC
* + instructions for X/FB share buttons and started discussion system
* fix: module name `code` shadowed Python standard library module
* added What's next section
* +blog tutorial engagement part
* fix: updated Giscus code snippet
* trying multiple tutorials with headings for each group
* + basic social cards tutorial
* + custom social card tutorial
* + estimated time for custom card tutorial
* added tutorial sections to nav
* fixed typos, removed sponsor icon from level one heading
* removed "tutorial" from level one heading
* added headings to custom layout example
* fixed broken link
* fixes after run-through, added links to template repos
* added comment for @squidfunk
* clarified use of logos, some proof-reading
* removed question I left for @squidfunk
* clarified relationship between background color and image
* added override for the background image
* fixed wording and indentation
* changed example to be releases, not events
* being more specific where to add the last bit of code in the layout
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Co-authored-by: squidfunk <martin.donath@squidfunk.com>
