ECR-4083: long to int migration

[bullet-tooth]

Overview

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See: https://jira.bf.local/browse/ECR-4083

Add migration from long to int for:

• tx_position
• index_in_block

Definition of Done

• There are no TODOs left in the code
• Change is covered by automated tests
• The coding guidelines are followed
• Public API has Javadoc
• Method preconditions are checked and documented in the Javadoc of the method
• Changelog is updated if needed (in case of notable or breaking changes)
• The continuous integration build passes

[dmitry-timofeev]

Code looks good, but why does it target ecr-4021 and not master? Where the native will be updated to the appropriate revision?

[bullet-tooth]

@dmitry-timofeev we agreed with @vitvakatu that we'll create a new base branch for reflection all required changes there. So I will re-create a new PR with new base