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/register.rs

@@ -0,0 +1,76 @@
+use serde::{Deserialize, Serialize};
+use serde_json::Value as JsonValue;
+use std::fs;
+use std::path::{Path, PathBuf};
+use toml::Value as TomlValue;
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Registry {
+    pub url: String,
+    pub priority: i32,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct DcrConfig {
+    pub registry: std::collections::HashMap<String, Registry>,
+}
+
+pub fn get_registry_config() -> Option<DcrConfig> {
+    let home = std::env::var("HOME").ok()?;
+    let config_path = Path::new(&home).join(".dcr/config.toml");
+    if !config_path.exists() {
+        return None;
+    }
+
+    let content = fs::read_to_string(config_path).ok()?;
+    toml::from_str(&content).ok()
+}
+
+pub fn get_index_path() -> PathBuf {
+    std::env::var("DCR_INDEX_PATH")
+        .map(PathBuf::from)
+        .unwrap_or_else(|_| {
+            let home = std::env::var("HOME").unwrap_or_else(|_| ".".to_string());
+            Path::new(&home).join(".dcr").join("index.json")
+        })
+}
+
+pub fn resolve_package_from_registry(name: &str) -> Result<JsonValue, String> {
+    let config = get_registry_config().ok_or("No registry config found")?;
+    let mut registries: Vec<(&String, &Registry)> = config.registry.iter().collect();
+    registries.sort_by(|a, b| b.1.priority.cmp(&a.1.priority));
+
+    for (_name_reg, _reg) in registries {
+        let index_path = get_index_path();
+        if index_path.exists() {
+            let index_content = fs::read_to_string(&index_path).map_err(|e| e.to_string())?;
+            let index: JsonValue =
+                serde_json::from_str(&index_content).map_err(|e| e.to_string())?;
+            if let Some(pkgs) = index.get("packages").and_then(|v| v.as_array()) {
+                for pkg in pkgs {
+                    if pkg.get("name").and_then(|v| v.as_str()) == Some(name) {
+                        return Ok(pkg.clone());
+                    }
+                }
+            }
+        }
+    }
+    Err(format!(
+        "Package {} not found in registry (checked: {:?})",
+        name,
+        get_index_path()
+    ))
+}
+
+pub fn is_registry_dep(value: &TomlValue) -> bool {
+    if value.is_str() {
+        return true;
+    }
+    if let Some(table) = value.as_table() {
+        return !table.contains_key("git")
+            && !table.contains_key("path")
+            && !table.contains_key("url")
+            && !table.contains_key("version");
+    }
+    false
+}