[tracking] Migrate pallets to umbrella crate

[re-gius]

Migrate all pallets to polkadot-sdk-frame by adding types and preludes to it when necessary. As a reference, you can look into #5995.

The guidelines of the umbrella crate are as follows:

polkadot-sdk/substrate/frame/src/lib.rs

Lines 134 to 150 in 06a68be

	//! ## Maintenance Note
	//!
	//! > Notes for the maintainers of this crate, describing how the re-exports and preludes should
	//! > work.
	//!
	//! * Preludes should be extensive. The goal of this pallet is to be ONLY used with the preludes.
	//! The domain-specific modules are just a backup, aiming to keep things organized. Don't hesitate
	//! in adding more items to the main prelude.
	//! * The only non-module, non-prelude items exported from the top level crate is the `pallet`
	//! macro, such that we can have the `#[frame::pallet] mod pallet { .. }` syntax working.
	//! * In most cases, you might want to create a domain-specific module, but also add it to the
	//! preludes, such as `hashing`.
	//! * The only items that should NOT be in preludes are those that have been placed in
	//! `frame-support`/`sp-runtime`, but in truth are related to just one pallet.
	//! * The currency related traits are kept out of the preludes to encourage a deliberate choice of
	//! one over the other.
	//! * `runtime::apis` should expose all common runtime APIs that all FRAME-based runtimes need.

👉 If you want to work on this: Please check that there is not already a merge request for the pallet that you want to work on (here or in the comments below). Please pick only one or a small set of pallets - not all at once. This keeps review times low. Add a comment below to announce the pallets you're working on.

Completed:

• pallet-multisig Use frame umbrella crate in pallet-proxy and pallet-multisig #5995
• pallet-proxy Use frame umbrella crate in pallet-proxy and pallet-multisig #5995

In progress:

• pallet-babe Use frame umbrella crate in pallet-babe & pallet-staking-reward-curve #6412
• pallet-staking-reward-curve Use frame umbrella crate in pallet-babe & pallet-staking-reward-curve #6412

To do:

• all the other pallets.

[bennethxyz]

Can I pick this up @re-gius

Thinking this should be a tracking issue as it involves more than one crate but happy to do it!

[re-gius]

Can I pick this up @re-gius

Thinking this should be a tracking issue as it involves more than one crate but happy to do it!

Yes, it's going to be a tracking issue. You are more than welcome to start working at some pallets/crates, ideally one or two per PR.