Update to gfx-hal borrow refactor

[kvark]

Depends on https://github.com/gfx-rs/gfx/pull/3586 Also:

• removes typed-arena dependency
• removes soundness bug with semaphore fake state
• use make_slice more

[kvark]

bors r+

[bors[bot]]

Build succeeded:

• iOS Stable
• MacOS Stable
• Ubuntu Nightly
• Windows Stable