* [ci] Check format of UI tests as well

* [lang] Apply our formatting guidelines to UI tests

* [ci] Make Gitlab happy

* [ci] Remove superfluous space

* [ci] Output rustfmt version

* [ci] Tune rustfmt params

* Remove todo's

* Migrate erc721 ui test contract to recent example contract

* Remove --version command used to debug

* Apply cargo fmt

* .gitlab-ci.yml formatting

* Add main fn

* Remove todo from stderr expect

* Adapt fixtures

* Revert "Adapt fixtures"

This reverts commit 174c012e.

* Adapt fixtures

* [*] split ink_core into ink_env and ink_storage

The workspace does not yet compile!

* [env] make compile again

* [env] fix doc tests

* [storage] make crate compile again

* [env] fix some doc comment links

* [README] flipper example: remove unused import

* [storage/derive] fix compilation of generated code

* [README] add ink_storage and ink_env doc links

* [env, primitives, storage] fix docs

* [lang] make compile again

* [lang/codegen] use absolute paths in #[ink::test] proc. macro

* [examples] make compile again

* [*] apply rustfmt

* [env] remove unneeded dependencies

* [storage] remove all unneeded dependencies and crate features

* [*] update outdated dependencies

* [env, lang] remove unused dependencies

* [*] fix comments

* [*] fix some intra doc links

* [ci] adjust to split ink_env and ink_storage crates

* [ci] forgot to handle split ink_env and ink_storage in docs

* [storage] fix fuzz tests

* [examples] apply rustfmt

* [examples] apply rustfmt (ERC-721)

* [*] move all ink! crates into crates/ directory

* [ci] adjust .gitab-ci.yml to crates/ directory

* [ci] fix GitLab .gitlab-ci.yml (attempt #2)

* [ci] forgot some lines in attempt #2

* [examples] fix example smart contracts

They need to readjust their paths for the crates/ directory.