Migration to .NET 9

[Apolixit]

No description provided.

[Apolixit]

Todo :

• Finish implementation and debug of HybridCache
• Cache metadata (call database)
• Finish implementation NFT storage classes
• Finish API Gateway
• In back office tool, add generation of :

1. EF auto model builder
2. Add function : PublishEventToHubAsync
3. Add function into PolkanalysisHub
4. Add model into EF db context automatically

[sonarqubecloud]

Quality Gate failed

Failed conditions
56.1% Coverage on New Code (required ≥ 80%)
C Reliability Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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