feat: add support for moving files

This commit introduces the ability to move files using a new `Moved File:` action in the input markdown, enhancing Strux's capabilities for declarative file structure management. The project version has been bumped to `0.3.0` to reflect this new functionality.

Key changes include:

**Parser:**
- Recognizes `## Moved File: <source> to <destination>` and `**Moved File: <source> to <destination>**` headers.
- Supports these headers in standalone and wrapped (` ```markdown `) formats.
- Handles paths containing the " to " keyword by requiring backtick escaping for such path segments.
- `header_utils.rs` was updated to extract source and destination paths for move actions, correctly ignoring trailing comments or descriptions.

**Processor:**
- Implements a new `process_move` function in `src/processor/move_file.rs` utilizing `std::fs::rename`.
- Automatically creates parent directories for the destination path if they don't exist.
- Robustly handles various scenarios:
    - Source file not found (skipped).
    - Source path is a directory (skipped).
    - Destination file exists:
        - Skips if `--force` is not used.
        - Overwrites if `--force` is used.
    - Destination path is an existing directory (skipped; the file is not moved into the directory).
    - Source and destination paths are identical (skipped as a no-op, or "overwritten" if `--force` is used).
- Ensures both source and destination paths are within the safe base directory.

**Core & CLI:**
- Updated `Action`, `ActionType`, and `Summary` data structures to include move-related fields and statuses (e.g., `ActionType::Move`, `Action.dest_path`, `Summary.moved`, `MoveStatus` enum).
- The CLI output summary now displays detailed statistics for moved files, overwritten moves, and various skipped move scenarios.
- The `--force` option now also applies to overwriting destination files during a move operation.

**Documentation & Dependencies:**
- `README.md` has been updated to document the new "Moved File" action, its syntax, and examples.
- Several core and development dependencies have been updated to their latest patch versions (e.g., `clap`, `assert_cmd`, `bitflags`).

Extensive integration and unit tests have been added across the `tests/parser`, `tests/processor`, and `tests/cli` suites to cover the new move functionality, its edge cases, and interactions with existing actions.

Author: Romelium

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "strux"
-version = "0.2.0"
+version = "0.3.0"
 edition = "2021"
 description = "Strux: A CLI tool to generate directory structures and file contents from structured markdown."
 license = "MIT"