Go: Add v5, v6 & v7 Report Schemas

[andrejrakic]

This PR adds the following Report Schemas to Go SDK:

v5

const reportBlobAbiV5 = [
  { type: 'bytes32', name: 'feedId' },
  { type: 'uint32', name: 'validFromTimestamp' },
  { type: 'uint32', name: 'observationsTimestamp' },
  { type: 'uint192', name: 'nativeFee' },
  { type: 'uint192', name: 'linkFee' },
  { type: 'uint32', name: 'expiresAt' },
  { type: 'int192', name: 'rate' },
  { type: 'uint32', name: 'timestamp' },
  { type: 'uint32', name: 'duration' },
]

v6

const reportBlobAbiV6 = [
  { type: 'bytes32', name: 'feedId' },
  { type: 'uint32', name: 'validFromTimestamp' },
  { type: 'uint32', name: 'observationsTimestamp' },
  { type: 'uint192', name: 'nativeFee' },
  { type: 'uint192', name: 'linkFee' },
  { type: 'uint32', name: 'expiresAt' },
  { type: 'int192', name: 'price' },
  { type: 'int192', name: 'price2' },
  { type: 'int192', name: 'price3' },
  { type: 'int192', name: 'price4' },
  { type: 'int192', name: 'price5' },
]

v7

const reportBlobAbiV7 = [
  { type: 'bytes32', name: 'feedId' },
  { type: 'uint32', name: 'validFromTimestamp' },
  { type: 'uint32', name: 'observationsTimestamp' },
  { type: 'uint192', name: 'nativeFee' },
  { type: 'uint192', name: 'linkFee' },
  { type: 'uint32', name: 'expiresAt' },
  { type: 'int192', name: 'exchangeRate' },
]

[Copilot]

Pull Request Overview

This PR adds Report Schema implementations for data stream versions v5, v6, and v7 to the Go SDK. These schemas handle different data structures for financial feeds including exchange rates, multiple price points, and rate/duration data.

• Implements three new report schema versions (v5, v6, v7) with corresponding data structures and ABI definitions
• Adds comprehensive test coverage for encoding/decoding operations for all new schemas
• Updates the core report type union and feed version constants to include the new versions

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
go/report/v5/data.go	Implements v5 schema with rate, timestamp, and duration fields
go/report/v5/data_test.go	Test coverage for v5 data encoding/decoding
go/report/v6/data.go	Implements v6 schema with five price fields (price, price2-5)
go/report/v6/data_test.go	Test coverage for v6 data encoding/decoding
go/report/v7/data.go	Implements v7 schema with single exchangeRate field
go/report/v7/data_test.go	Test coverage for v7 data encoding/decoding
go/report/report.go	Updates Data type union to include v5, v6, v7 data types
go/report/report_test.go	Adds integration tests and test data for all new schema versions
go/feed/feed.go	Adds FeedVersion5, FeedVersion6, FeedVersion7 constants

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