Add the ability to set the plugin path with config --set

[chaqchase]

This pull request includes various updates and improvements across multiple files, primarily focusing on version updates, code formatting, and minor refactoring. The most important changes include updating the version number, improving code readability, and adding new functionalities.

Version Updates:

• Cargo.toml: Updated the version from 0.3.3 to 0.3.4.
• lla/Cargo.toml: Updated the lla_plugin_interface version from 0.3.3 to 0.3.4.
• README.md: Updated the download link to reflect the new version 0.3.4.

Code Formatting Improvements:

• lla/src/commands/args.rs: Reformatted the impl Args block to improve readability [1] [2].
• lla/src/commands/plugin_utils.rs: Reformatted the list_plugins function for better readability.
• lla/src/config/mod.rs: Combined derive attributes into a single line for FilterConfig and SortOptions [1] [2].

New Functionalities:

• CHANGELOG.md: Documented the addition of the ability to set plugins path with config --set.