v1.0: change the behavior of `--schedule-snapshot`

[maryamsulemani97]

• Remove --snapshot-interval-sec
• --schedule-snapshot now accepts an interval in seconds
• If --schedule-snapshot is given without any value, snapshots are activated with the default value (24h)

To do

Some may be missing

• Update instance options
• Update Snapshots

Reference

• Spec: Merge snapshot options specifications#214
• Issue on core: CLI stabilization: change the behavior of --schedule-snapshot meilisearch#3131
• Product discussion: Merge snapshot related CLI options/flags product#566
• SME: @dureuill