refactor(cdk): use polymorphic enums for mint and melt quotes

[thesimplekid]

Description

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• depends on feat: rename payment_preimage to payment_proof #1873
• depends on feat(payment): add QuoteId identifier #1897
• depends on feat: get melt saga by quote #1900
• depends on fix: persist melt extra_json #1910

Notes to the reviewers

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Suggested CHANGELOG Updates

CHANGED

ADDED

REMOVED

FIXED

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Checklist

• I followed the code style guidelines
• I ran just quick-check before committing
• If the Wallet API was modified (added/removed/changed), I have reflected those changes in the FFI bindings (crates/cdk-ffi)

[codecov]

Codecov Report

❌ Patch coverage is 80.69106% with 95 lines in your changes missing coverage. Please review.
✅ Project coverage is 64.32%. Comparing base (2fed066) to head (05fc5fe).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/cdk-axum/src/custom_handlers.rs	0.00%	50 Missing ⚠️
crates/cdk-common/src/mint.rs	79.52%	26 Missing ⚠️
crates/cdk/src/mint/subscription.rs	0.00%	5 Missing ⚠️
crates/cdk-fake-wallet/src/lib.rs	80.95%	4 Missing ⚠️
crates/cdk/src/mint/melt/mod.rs	50.00%	4 Missing ⚠️
crates/cdk/src/mint/issue/mod.rs	50.00%	2 Missing ⚠️
crates/cdk/src/wallet/test_utils.rs	0.00%	2 Missing ⚠️
crates/cdk-integration-tests/src/lib.rs	0.00%	1 Missing ⚠️
crates/cdk/src/wallet/melt/saga/mod.rs	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1875      +/-   ##
==========================================
+ Coverage   63.76%   64.32%   +0.56%     
==========================================
  Files         329      329              
  Lines       55178    55608     +430     
==========================================
+ Hits        35184    35771     +587     
+ Misses      19994    19837     -157     

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[lescuer97]

I know the pr is not ready yet but I wanted to add some small comments.
on double clone() there are more that I signaled.