Refactor static mut usage in medea-macro

[evdokimovs]

Related to #193

Synopsis

We need to refactor static mut usage from the medea-macro crate.

After this PR we will get rid of all static mut usage in medea-jason crate.

Solution

Replace all static mut inside #[dart_bridge] macro with thread_local! based alternatives.

Checklist

• Created PR:
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  • Documentation is updated (if required)
  • Tests are updated (if required)
  • Changes conform code style
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  • FCM (final commit message) is posted or updated
  • Draft mode is removed
• Review is completed and changes are approved
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[evdokimovs]

FCM

Refactor `static mut` usage in `medea-macro` (#196)

Additionally:
- fix unused import related to feature gated Android logger
- temporary disable `wasm-opt`