[package-alt] Implemented a few things for package-alt crate (#22026)

## Description 

This PR is a collection of several features that were added in the last
and current sprint.
- improved tests for resolution
- fetching and pinning of git dependencies
- jsonrpc external resolver
- moved the testing infra to the one used in `move-package`
- added a basic CLI to read a lockfile/manifest, and build the package
(limited support, only parsing mainfests + lockfiles as of now).

We want to merge this branch before starting on some larger refactorings
around lockfile design + dependency graph building.

## Test plan 

`cargo nextest run`

---

## Release notes

Check each box that your changes affect. If none of the boxes relate to
your changes, release notes aren't required.

For each box you select, include information after the relevant heading
that describes the impact of your changes that a user might notice and
any actions they must take to implement updates.

- [ ] Protocol: 
- [ ] Nodes (Validators and Full nodes): 
- [ ] gRPC:
- [ ] JSON-RPC: 
- [ ] GraphQL: 
- [ ] CLI: 
- [ ] Rust SDK:

---------

Co-authored-by: Michael D. George <mike.george@mystenlabs.com>

Author: stefan-mysten

Cargo.lock

@@ -11,7 +11,7 @@ use move_package_alt::{
 };
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Serialize, Deserialize, Clone)]
+#[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
 #[serde(rename = "kebab-case")]
 pub struct OnChainDependency {
     on_chain: bool,

crates/sui-package-alt/src/sui_flavor.rs

@@ -144,7 +144,6 @@ zstd = "0.13.2"
 
 bytecode-interpreter-crypto = { path = "crates/bytecode-interpreter-crypto" }
 enum-compat-util = { path = "crates/enum-compat-util" }
-external-resolver = { path = "crates/external-resolver" }
 invalid-mutations = { path = "crates/invalid-mutations" }
 module-generation = { path = "crates/module-generation" }
 move-abstract-interpreter = { path = "crates/move-abstract-interpreter" }