feat: add bump-version.sh script for version management

Automates version bumps across all version source files:
- Cargo.toml (PRIMARY - workspace.package.version)
- debian/changelog (prepend new entry)
- debian/control (update Version field)
- scripts/build-package.sh (update VERSION variable)
- frontend/package.json (update version field)
- Stale references check after bump

Usage: ./scripts/bump-version.sh <new_version> <old_version>

rustfmt.toml

@@ -0,0 +1,14 @@
+# Linux Patch Manager - Rust Formatting Configuration
+# Run: cargo fmt --check (CI) or cargo fmt (fix)
+# Only stable options - nightly-only options removed
+
+edition = "2021"
+max_width = 100
+hard_tabs = false
+tab_spaces = 4
+newline_style = "Unix"
+use_small_heuristics = "Default"
+reorder_imports = true
+reorder_modules = true
+remove_nested_parens = true
+match_block_trailing_comma = true