feat: Enhance dependency management and project setup

- Added support for registry-based dependencies in the dependencies section.
- Updated the package section to include a project type field.
- Introduced a new CLI command `dcr setup` to load and display registry configurations.
- Implemented a new module for handling registry operations, including loading and resolving packages from registries.
- Enhanced the build process to handle library packaging, including copying headers and libraries to the appropriate target directories.
- Updated the CLI to support building library packages and added tests for library package builds.
- Improved error handling and output messages during dependency resolution and package fetching.

src/core/deps/git.rs

@@ -1,5 +1,6 @@
 use std::path::Path;
 
+#[allow(dead_code)]
 pub fn fetch_git_dep(
     url: &str,
     target_dir: &Path,
@@ -29,6 +30,7 @@ pub fn fetch_git_dep(
     Ok(())
 }
 
+#[allow(dead_code)]
 fn checkout_ref(repo: &git2::Repository, reference_str: &str) -> Result<(), String> {
     let (object, reference) = repo
         .revparse_ext(reference_str)