fix: add missing .cxx/.cc/.hxx/.hh extensions to fmt; update docs for 0.7.0

src/platform/bsd.rs

@@ -1,3 +1,20 @@
+// 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/>.
+
 pub fn bin_path(profile: &str, name: &str, target_dir: Option<&str>) -> String {
     match target_dir {
         Some(dir) => format!("{}/{}", dir.trim_end_matches('/'), name),