Feat/add configurable keybindings

[jara505]

Overview

Add configurable keybindings support to allow users to customize dashboard shortcuts. This addresses the need for Neovim users who prefer to define their own keybindings instead of using defaults.

Key Changes

• Add keys configuration option in state.lua with defaults
• Update init.lua to handle custom keybindings in setup()
• Modify ui/init.lua to use configurable keys for close/prev_year/next_year actions
• Add default keybinding in plugin/wrapped.lua for out-of-box functionality
• Update README with complete configuration example

Impact

• plugin/wrapped.lua - Default keybinding
• lua/wrapped/state.lua - Keys configuration defaults
• lua/wrapped/init.lua - Setup logic for custom keys
• lua/wrapped/ui/init.lua - UI keybindings
• README.md - Documentation

[aikhe]

love this pr, i was too lazy to add it myself lol

merging this once #14 is good

#14 (comment)

[jara505]

Removed the default gw keybinding and updated the README to no longer reference it.
Also added validation for unknown keys in the config, showing messages like: [wrapped] Unknown key: open. Valid keys: close, refresh, prev_year, next_year. @aikhe

[aikhe]

thanks!