Tracking issue for `no_std` compatibility

[jedel1043]

Tasks:

• Make all trivial sub-crates no_std.
• Design a GC that is no_std a.k.a. atomic.
• Create compatibility layer for usages of thread_local in the engine.
• Refactor the engine to use alloc instead of std where required.

[Lohann]

I need this feature, follow an example on how to painless support no_std:

• https://github.com/paritytech/polkadot-sdk/tree/v1.17.0-rc5/substrate/primitives/std
• https://crates.io/crates/sp-std