refactor: change byte prefixing scheme for consumer

[mpoke]

Description

Closes: #939

Consumer-side changes to be consistent with #2061.

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Author Checklist

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please add links to any relevant follow up issues.

I have...

• Included the correct type prefix in the PR title
• Added ! to the type prefix if the change is state-machine breaking
• Confirmed this PR does not introduce changes requiring state migrations, OR migration code has been added to consumer and/or provider modules
• Targeted the correct branch (see PR Targeting)
• Provided a link to the relevant issue or specification
• Followed the guidelines for building SDK modules
• Included the necessary unit and integration tests
• Added a changelog entry to CHANGELOG.md
• Included comments for documenting Go code
• Updated the relevant documentation or specification
• Reviewed "Files changed" and left comments if necessary
• Confirmed all CI checks have passed
• If this PR is library API breaking, bump the go.mod version string of the repo, and follow through on a new major release

Reviewers Checklist

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your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! the type prefix if the change is state-machine breaking
• confirmed this PR does not introduce changes requiring state migrations, OR confirmed migration code has been added to consumer and/or provider modules
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage

Summary by CodeRabbit

• New Features

  • Updated key management for improved clarity and consistency in handling channel IDs and data packet prefixes.
  • Added versioned key prefixes for managing pending data and migration processes.

• Bug Fixes

  • Enhanced handling of key retrieval and migration processes to ensure correct versioning and prevent legacy data issues.

• Documentation

  • Improved comments for better clarity regarding key definitions and usage in code.

• Tests

  • Strengthened test coverage for key management logic, including checks for overlapping keys and preservation of byte prefixes.

[coderabbitai]

Walkthrough

Walkthrough

The changes primarily focus on enhancing key management within the Keeper module by transitioning from byte prefixes to versioned key prefixes. This shift improves clarity and maintainability across various functions dealing with channel IDs and pending data packets. Additionally, there are consistent updates to naming conventions for constants, migration functions, and tests, all aimed at preventing potential key management issues due to refactoring.

Changes

Files	Change Summary
x/.../keeper/keeper.go	Renamed key constants to improve clarity, updated prefixes for iterator functions, and streamlined pending packet management.
x/.../migrations/v2/migration.go	Updated migration functions to utilize versioned key prefixes for pending data packets and simplified function signatures.
x/.../migrations/v2/migration_test.go	Changed key storage methods in tests to use versioned key prefixes, enhancing maintainability and clarity.
x/.../types/keys.go	Renamed constants for better clarity, added new functions for structured key prefix retrieval, and updated existing functions accordingly.
x/.../types/keys_test.go	Transitioned to using exported functions from the consumertypes package, added tests for prefix integrity.
x/.../provider/types/keys.go	Minor adjustments to comments for clarity in the getKeyPrefixes function.
x/.../provider/types/keys_test.go	Removed unnecessary imports and ensured consistent alias usage across tests.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant Keeper
    participant KVStore
    participant Migration

    Client->>Keeper: SetProviderChannel(channelID)
    Keeper->>KVStore: Store ProviderChannelIDKey
    Client->>Keeper: GetProviderChannel()
    Keeper->>KVStore: Retrieve ProviderChannelIDKey
    Keeper->>Client: Return channelID

    Migration->>KVStore: Access PendingDataPacketsV1KeyPrefix
    Migration->>KVStore: Delete old pending packets
    Migration->>KVStore: Store new consumer packet data

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Assessment against linked issues

Objective	Addressed	Explanation
Rethink byte prefixing scheme (#939)	✅
Improve clarity and maintainability of key management	✅

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[coderabbitai]

Actionable comments posted: 1

[sainoe]

LGTM

[MSalopek]

Admin approval.