Add Harpoon2 plugin to Neovim configuration and integrate it with Telescope and Which-Key.
* Add `ThePrimeagen/harpoon` plugin to `lua/custom/plugins/init.lua` with branch `harpoon2` and configure it.
* Add keybindings for Harpoon commands in `init.lua`.
* Integrate Harpoon with Telescope by creating a custom picker for Harpoon marks and adding keybindings to open the custom picker.
* Integrate Harpoon with Which-Key by adding commands to the Which-Key menu and creating keybindings for adding, navigating, and removing Harpoon marks.
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For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/sebbii17/kickstart.nvim?shareId=XXXX-XXXX-XXXX-XXXX).
Sebastian
Sebastian
TJ DeVries