Move migrations to versioned tuples

[chevdor]

WIP

Description

Follow up of the work started in paritytech/polkadot#7168 by @ggwpez.

This PR moves all current migrations to versioned tuples.
It allows bringing all runtimes from the SDK repo into a compliant state similar to Polkadot and Kusama.

The introduction of migrations::V1_04_00 migrations::V1_05_00 was not fully required yet but was introduced as placeholder to get things started for the next release after the PR is merged.

When v1.5.0 will be released, all Unreleased migrations can move to migrations::V1_05_00 and free the room in the now empty migrations::Unreleased for the next version.

Check

The PR introduces a new CI check for the formatting of the migrations.

fmt

This PR introduces a few #[rustfmt::skip] to prevent the Migrations from being reformatted to stress on the importance of the migrations' ordering.

#[rustfmt::skip]
pub type Migrations = (
	migrations::V1_04_00,
	migrations::Unreleased
);

Checking migrations in repo: . 
./cumulus/parachains/runtimes/assets/asset-hub-polkadot/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased
./cumulus/parachains/runtimes/assets/asset-hub-westend/src/lib.rs:
  - ✅ V0_09_20
  - ✅ V1_04_00
  - ✅ Unreleased
./cumulus/parachains/runtimes/assets/asset-hub-rococo/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased
./cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased
./cumulus/parachains/runtimes/contracts/contracts-rococo/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased
./cumulus/parachains/runtimes/bridge-hubs/bridge-hub-polkadot/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased
./polkadot/runtime/westend/src/lib.rs:
  - ✅ Unreleased
./cumulus/parachains/runtimes/assets/asset-hub-kusama/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased
./polkadot/runtime/rococo/src/lib.rs:
  - ✅ Unreleased
./cumulus/parachains/runtimes/testing/penpal/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased
./cumulus/parachains/runtimes/bridge-hubs/bridge-hub-kusama/src/lib.rs:
  - ✅ V1_04_00
  - ✅ Unreleased

Checklist

• My PR includes a detailed description as outlined in the "Description" section above
• Fix formatting
• My PR follows the labeling requirements of this project (at minimum one label for T
  required)

[paritytech-cicd-pr]

The CI pipeline was cancelled due to failure one of the required jobs.
Job name: cargo-clippy
Logs: https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/4707693