Project structure: inline dataloading module

[ndr-brt]

Feature Request

Since the introduction of the data-management api, the dataloading mechanism seems to be not needed anymore.
The module should be inlined:

• AssetEntry and DataLoader will be moved to the spi
• AssetLoader and ContractDefinitionLoader will be inlined to their extenders (AssetIndex and ContractDefinitionStore)
• the rest of the module and the data-loader-cli will be removed

Which Areas Would Be Affected?

core

Why Is the Feature Desired?

cleanup

Solution Proposal

Type of Issue

cleanup

Checklist

• assigned appropriate label?
• Do NOT select a milestone or an assignee!