feat(system-services, tests): composable and overridable system services [NET-530, NET-531]

[kmd-fl]

Description

Decompose system services crate to be able to override and extend used system services.

Motivation

ATM the system services are build in the system service deployer. To modify them or to add new ones, you need to change the deployer itself. In this PR we introduce a way to define a system service separately from the deployer and deploy any provided set of services. Also, we extend the tests interface to be able to modify and created custom system services.

Proposed Changes

1. Introduced the PackageDistro structure to define a system service with all aux spells and services. I call a package, not a system service (since it's not a single service but a set of services) or a worker (since it's not installed on a separate worker) for clarity of the purpose, but we way rename it to SystemServiceDistro, although I find the package concept more general. Probably, we can use this concept in FCLI to make re-usable and composable services.
2. Put definition of the default system services (aqua-ipfs, registry and so on) outside of the deployer.
3. Made it possible to override default system services and introduce new ones.
4. Extended the test interface to override or extend used system services.

Additional Notes

1. In the future, I plan to create PackageDistro for each system service in the corresponding system service distro crate, and import it.
2. We need to reorganize the cargo configuration of the project to be able to publish create-swarm crate, but do it in a separate PR.

[linear]

NET-531 Override system services in CreatedSwarm

NET-530 Refactor system services crate

To be able to define system services outside of the crate

[kmd-fl]

@justprosh @nick let's merge it maybe?

[folex]

Nice!