feat: Move personal plugins in separate dir

lua/plugins/custom/bullets.lua

@@ -0,0 +1,16 @@
+-- INFO:
+-- Bllets.vim is a Vim plugin for automated bullet lists.
+-- https://github.com/bullets-vim/bullets.vim
+-- https://github.com/bullets-vim/bullets.vim/wiki/Configuration
+-- https://github.com/bullets-vim/bullets.vim/wiki/Usage
+
+return {
+  "bullets-vim/bullets.vim",
+  ft = { "markdown", "yaml", "text" },
+  init = function()
+    vim.g.bullets_enabled_file_types = { "markdown", "yaml", "text" }
+    vim.g.bullets_renumber_on_change = 1
+  end,
+}
+
+-- TODO: Voir aussi l'adaptation lua de ce plugin : https://github.com/kaymmm/bullets.nvim