pallet alliance / update to use fungible

[gilescope]

This updates the alliance pallet to use the new fungible traits rather than the now deprecated Currency and ReserveCurrency traits ( paritytech/substrate#12951 ). Partial fix of #226.

Todo:

• Add code (if needed) to handle migrations.
• Update runtimes

[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/3769534

[gilescope]

I don't think we want to have to switch the treasury over to fungibles yet so we might have to add an adaptor between the imbalance type mismatch.

[kianenigma]

This one can probably use Conasiderations instead.