The main goal of this patch is to define core Radicle types so that crates do not have to use radicle as the main dependency, when all they need are a few core types.

This will eventually result in smaller crates that are scoped to well-defined concepts, eventually resulting in untangling the radicle crate, so that it simply re-exports all the smaller crates.

The first two types in this crate are RepoId and NodeId, since they are ubuiquitous to all other functionality.

Something isn’t quite right. If you look at my CI’s output (https://cci.rad.levitte.org//9bc17919-46e6-4817-8816-f37aa61ccd84.html), there are some errors there, which I’ve corroborated manually on my laptop:

$ cargo test --workspace --no-fail-fast
...
   Doc-tests radicle_core

running 2 tests
test crates/radicle-core/src/node.rs - node (line 9) ... FAILED
test crates/radicle-core/src/node.rs - node (line 5) ... FAILED

failures:

---- crates/radicle-core/src/node.rs - node (line 9) stdout ----
error[E0425]: cannot find value `z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi` in this scope
 --> crates/radicle-core/src/node.rs:10:1
  |
3 | z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0425`.
Couldn't compile the test.
---- crates/radicle-core/src/node.rs - node (line 5) stdout ----
error: expected expression, found keyword `type`
 --> crates/radicle-core/src/node.rs:6:45
  |
3 | MULTIBASE(base58-btc, MULTICODEC(public-key-type, raw-public-key-bytes))
  |                                             ^^^^ expected expression

error[E0425]: cannot find value `base58` in this scope
 --> crates/radicle-core/src/node.rs:6:11
  |
3 | MULTIBASE(base58-btc, MULTICODEC(public-key-type, raw-public-key-bytes))
  |           ^^^^^^ not found in this scope

error[E0425]: cannot find value `btc` in this scope
 --> crates/radicle-core/src/node.rs:6:18
  |
3 | MULTIBASE(base58-btc, MULTICODEC(public-key-type, raw-public-key-bytes))
  |                  ^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `MULTIBASE` in this scope
 --> crates/radicle-core/src/node.rs:6:1
  |
3 | MULTIBASE(base58-btc, MULTICODEC(public-key-type, raw-public-key-bytes))
  | ^^^^^^^^^ not found in this scope

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0425`.
Couldn't compile the test.

failures:
    crates/radicle-core/src/node.rs - node (line 5)
    crates/radicle-core/src/node.rs - node (line 9)

test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s

error: doctest failed, to rerun pass `-p radicle-core --doc`
...

Review

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Minor rewordings of commit messages