Restructure modules/shared and update all imports

- Rename modules/hosts/common to modules/shared
- Split shared into home/general, home/linux, and nixos subdirectories
- Update all import paths in lib/ and modules/hosts/
- Fix hardcoded /Users/ path to use config.home.homeDirectory
- Update .sops.yaml path for secrets

modules/hosts/common/files/nvim/lua/disabled/themes/tokyonight.lua

@@ -1,10 +0,0 @@
-return {
-  -- the colorscheme should be available when starting Neovim
-  "folke/tokyonight.nvim",
-  lazy = false, -- make sure we load this during startup if it is your main colorscheme
-  priority = 1000, -- make sure to load this before all the other start plugins
-  config = function()
-    -- load the colorscheme here
-    vim.cmd.colorscheme "tokyonight-storm"
-  end,
-}