refactor(deps): replace git2 with system git and add vcs support

src/core/vcs/git.rs

@@ -0,0 +1,32 @@
+// DCR — Cargo-like C/C++ project manager.
+//
+// Copyright (C) 2026 Dexoron (Bezotechestvo Vladimir) <main@dexoron.su>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use std::fs;
+use std::path::Path;
+
+// creating git init and .gitignore
+pub fn init(path: &Path) -> Result<(), String> {
+    crate::utils::git::git_init(path)?;
+
+    let gitignore_path = path.join(".gitignore");
+    if !gitignore_path.exists() {
+        fs::write(&gitignore_path, "/target\n")
+            .map_err(|e| format!("failed to create .gitignore: {}", e))?;
+    }
+
+    Ok(())
+}