Add CLI shortcuts for translate and write commands

[komape]

Problem

When using the CLI repeatedly, having to type out translate every time becomes tedious. Since translation and writing are the most common actions, it would be helpful to have shorter command aliases to speed things up and make the CLI more ergonomic.

Solution

Add short aliases for the most frequently used commands:

• t as a shortcut for translate
• w as a shortcut for write

Example usage:

deepl t 'Hello World'
deepl w 'Hello World'