fix parse config.toml

[kobayurii]

This pull request refactors how the transaction details storage provider is configured and accessed throughout the codebase. The main change is to move the tx_details_storage_provider field from specific sub-configs (like TxIndexerConfig and CommonGeneralTxIndexerConfig) to the top-level general configuration, ensuring consistent access and simplifying configuration management. The environment variable handling and default config files have also been updated to reflect this change.

Configuration refactoring:

• Moved the tx_details_storage_provider field from CommonGeneralTxIndexerConfig and TxIndexerConfig to CommonGeneralConfig and GeneralRpcServerConfig, making it a top-level field in the general configuration. This change ensures a single source of truth for the storage provider setting. [1] [2] [3] [4]
• Updated the deserialization logic for the tx_details_storage_provider field to use deserialize_data_or_env, allowing it to be set via environment variables more consistently.

Default configuration and environment variables:

• Added tx_details_storage_provider to the default environment configuration file, documenting available options and the default value. Removed redundant or outdated configuration lines from sub-config sections. [1] [2]

Code usage updates:

• Updated all references to tx_details_storage_provider in the codebase to use the new location in the general configuration, including in ServerContext and the tx-indexer main function. [1] [2]

Code cleanup:

• Removed now-unnecessary fields and default logic for tx_details_storage_provider from sub-configs and constructors. [1] [2] [3] [4]