Allow Key Remapping for Next, Previous, Search, Reload, and Quit

[febinjoy]

Describe the enhancement you'd like
I would like to enhance Search-Tail by allowing users to remap the default keys n, p, s, r, and q for the actions next, previous, search, reload, and quit, respectively. This feature should enable users to customise their key bindings according to their preferences or ergonomic needs.

Why is this enhancement important?
This enhancement is important because it provides flexibility and improves the usability of the tool. Different users may have different preferences or physical constraints that make the default key bindings less optimal. By allowing key remapping, we can accommodate a wider range of users and improve their overall experience with Search-Tail. It also caters to users who are accustomed to different key mappings from other tools or environments.

Describe alternatives you've considered
An alternative considered was to stick with the default key bindings without providing remapping capabilities. However, this limits the tool's adaptability and may not cater to the diverse needs of all users. Another option was to provide a few preset key mapping options, but this approach still lacks the full customisation that users might require.

Additional context
This enhancement aims to make Search-Tail more user-friendly and accessible. The implementation should provide a simple configuration file or command-line options where users can specify their preferred key mappings. The feature should be designed to work seamlessly with existing functionalities and not interfere with other operations of the tool.