Refactor FlexnSDK to Flexn Create

[pavjacko]

Closes https://github.com/flexn-io/create/issues/73 Closes https://github.com/flexn-io/create/issues/72 Closes https://github.com/flexn-io/create/issues/71

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[pauliusguzas]

web - starts, crash on carousels page

android, androidtv - doesn’t start, logs added android.txt androidtv.txt

ios - works fully tvos - no content on carousels and home

macos - doesn’t start

Same is confirmed by automation tests, though wdio is broken after latest pushes to this branch, same issue as https://github.com/renative-org/renative/issues/978

[pauliusguzas]

Web - works fine Android - error, log added below android.txt iOS - weird thing with menu that opening it pushes all content to the side

tvOS - fails to load details page

AndroidTV - fails to load details page macOS - same issue as previously

[pauliusguzas]

All platforms accept macos seem to be fine, also @aurimasmi could you look into https://github.com/renative-org/renative/issues/978 as this PR introduces same issue to create repo