add: slot-to-blocktime index + gsfa: store `OffsetAndSizeAndSlot` instead of `OffsetAndSizeAndBlocktime` #75

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	on:
	pull_request:
	workflow_dispatch:

	env:
	CARGO_TERM_COLOR: always

	name: tests_go
	jobs:
	test:
	strategy:
	matrix:
	go-version: [1.21.x]
	os: [ubuntu-latest]
	runs-on: ${{ matrix.os }}
	steps:
	- name: Install Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Test
	run: go test ./...

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