UltimateWall

### New Features

- **`/wall list` Command**: Administrators can now use `/wall list` to view all active temporary walls, owned walls, and defined regions. This command displays their locations and respective owners, aiding in server management.

- **`/wall info` Command**: Players can use `/wall info` when inside or near a protected area to retrieve detailed information about it. This includes the wall/region type, owner, and active protection flags.

- **Configurable Maximum Walls Per Player**: A new configuration option, `max-walls-per-player`, has been added to `config.yml`. This allows server administrators to limit the total number of temporary or owned walls a single player can have active simultaneously, preventing abuse and managing server resources. Set to `-1` for no limit.

- **Configurable Visual and Sound Effects**: New `visual-effects` settings in `config.yml` allow for enabling or disabling particle effects and sounds for key wall events:

    - `visual-effects.create`: Controls effects when a wall is created.

    - `visual-effects.destroy`: Controls effects when a wall is removed.

    - `visual-effects.block`: Controls effects when a player is blocked by a wall.

### Improvements

- **Enhanced Visual and Sound Feedback**: Implemented particle effects and sounds for wall creation, destruction, and player blocking events, providing clearer in-game feedback. These effects are fully customizable via the new `visual-effects` configuration.

- **Improved Command Handling**: Refined command sender checks to ensure appropriate messages are sent when non-player entities attempt to use player-only commands.

- **Expanded Tab Completion**: Added tab completion for the `/wallflags` command, making it easier for users to set region flags by suggesting available region names, flag names, and boolean values.