Reexport common dependencies from runtime-common

[lemunozm]

Description

Problem

For each pallet/runtime dependency used, we need to add such dependency to:

• development-runtime
• altair-runtime
• centrifuge-runtime
• integration-tests
• Sometimes to runtime-common

And configure runtime-benchmarks and try-runtime features in all crates.

Avoiding/mixing some feature names will lead to an annoying compile error that could take time to figure out what's going on.

Solution

We can simplify all these dependency boilerplate by adding all pallets to runtime-common and allowing runtime-common to reexport them. So, in runtime-common we can have:

pub mod reexport {
    pub mod pallets {
        pub use pallet_timestamp;
        // Other pallets
    }
}

From runtimes, on top of the file:

use runtime_common::reexport::pallets::*;

And the code would remain inmutable for runtimes, but with access to all pallets without modifying Cargo.toml files.

In the future, this would avoid nix hash breaks.

[lemunozm]

There are some issues with the reexporting list:

• The generated weights in runtimes will need to be refactored to prefix the pallet used there with crate:: which implies not to use the default template from substrate and use a custom one that we need to maintain.
• We need to add use runtime_common::reexport::pallets::*; in every file

[lemunozm]

The new usage of workspace dependencies already simplifies this, so I think we can skip this issue by now