Install cargo dependencies when building with cargo (rust too); build without default features on bsd

CHANGELOG.md

@@ -34,6 +34,8 @@ Released on FIXME: ??
   - libdbus is now a dependency
   - added `with-keyring` feature
   - **❗ BREAKING CHANGE ❗**: if you start using keyring on Linux, all the saved password will be lost
+- **Installation script**:
+  - From now on, in case cargo is used to install termscp, all the cargo dependencies will be installed
 - Bugfix:
   - Fixed broken input cursor when typing UTF8 characters (tui-realm 0.3.2)
 - Dependencies: