[PLAT-803] Split AvatarVersion

[DidacSF]

Description

This PR splits the AvatarVersion enum into two separate enums with new meanings:

• DnaEncoding represents how the bytes in the Avatar's DNA are encoded and what each byte represents.
• LogicGeneration represents which of the available Mint/Forge logics is used

Each LogicGeneration produces avatars with a given DnaEncoding, but a given DnaEncoding version could be produced/manipulated by different LogicGeneration generations.

Type of changes

• build: Changes that affect the build system or external dependencies (eg, Cargo, Docker)
• ci: Changes to CI configuration
• docs: Changes to documentation only
• feat: Changes to add a new feature
• fix: Changes to fix a bug
• refactor: Changes that do not alter functionality
• style: Changes to format the code
• test: Changes to add missing tests or correct existing tests

Checklist

• Tests for the changes have been added
• Necessary documentation is added (if appropriate)
• Formatted with cargo fmt --all
• Linted with cargo clippy --all-features --all-targets
• Tested with cargo test --workspace --all-features --all-targets

[codecov]

Codecov Report

Patch coverage: 72.22% and project coverage change: -0.01 ⚠️

Comparison is base (802982e) 70.97% compared to head (ea360ee) 70.96%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #310      +/-   ##
===========================================
- Coverage    70.97%   70.96%   -0.01%     
===========================================
  Files           33       33              
  Lines         3321     3320       -1     
===========================================
- Hits          2357     2356       -1     
  Misses         964      964              

Impacted Files	Coverage Δ
pallets/ajuna-awesome-avatars/src/migration/v5.rs	0.00% <0.00%> (ø)
...wesome-avatars/src/types/avatar/versions/v2/mod.rs	57.87% <0.00%> (ø)
pallets/ajuna-awesome-avatars/src/types/config.rs	100.00% <ø> (ø)
pallets/ajuna-awesome-avatars/src/types/season.rs	95.60% <ø> (ø)
...lets/ajuna-awesome-avatars/src/types/avatar/mod.rs	77.77% <66.66%> (ø)
pallets/ajuna-awesome-avatars/src/lib.rs	82.53% <87.50%> (-0.04%)	⬇️
...na-awesome-avatars/src/types/avatar/versions/v1.rs	87.32% <100.00%> (ø)
...atars/src/types/avatar/versions/v2/avatar_utils.rs	84.51% <100.00%> (ø)

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