update v3 docs with strategy guide (#337)

* build: strategy guide

* fix: links and grammer

* Update sidebarsDevelopers.js

* Update sidebarsDevelopers.js

* Update sidebarsDevelopers.js

* fix: updates

* fix: updates2

* fix: why section

* fix: definitions section

* fix: architecture section

* fix: getting started section

* fix: strategy writing section

* fix: of numbering

* fix: of summary

* improve headings

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Co-authored-by: Marco Guaspari Worms <[email protected]>
Co-authored-by: 0xBasically <[email protected]>