Restructure modules/shared and update all imports

- Delete 2024-12-rework/ folder
- Rename modules/hosts/common to modules/shared, then split into:
  - modules/shared/home/general
  - modules/shared/home/linux
  - modules/shared/nixos
- Update all import paths throughout the codebase
- Update lib/*.nix to use new paths
- Fix hardcoded /Users/${username} to use config.home.homeDirectory
- Update README and examples/flake-structure.nix

modules/shared/files/nvim/lua/config/vim-options.lua

@@ -0,0 +1,31 @@
+vim.g.mapleader = " "
+vim.g.maplocalleader = " "
+
+-- make sure vim know I always have a dark terminal
+vim.opt.background = "dark"
+
+-- use spaces for tabs and whatnot
+vim.opt.expandtab = true
+vim.opt.tabstop = 2
+vim.opt.softtabstop = 2
+vim.opt.shiftwidth = 2
+vim.opt.shiftround = true
+
+-- make sure all the mouse stuff is on.
+-- pressing alt to hightlight + copy/paste works like it does outside of nvim
+vim.opt.mouse = "a"
+
+vim.keymap.set("n", "<leader>h", ":nohlsearch<CR>")
+
+vim.wo.relativenumber = true
+
+vim.o.termguicolors = true
+
+-- Tips from https://github.com/folke/edgy.nvim
+-- views can only be fully collapsed with the global statusline
+vim.opt.laststatus = 3
+
+-- Default splitting will cause your main splits to jump when opening an edgebar.
+-- To prevent this, set `splitkeep` to either `screen` or `topline`.
+vim.opt.splitkeep = "screen"
+