Docs navigation redesign (smartcontractkit#1850)

* Docs navigation redesign

* Formatting

* Left burger mobile menu

* Mobile menu

* Nav improvements

* Temp fix type error

* Submenu open for current category

* Add dynamic styling for active link

* Normalize URL paths

* Hide home hero-background on mobile

* Remove back button from docs pages

* Add QS link to mobile nav

* Add remaining logos

* Swap QS and General logos and nav position

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Co-authored-by: Karim <[email protected]>