Nvim restart (#9)

* chore(nvim): remove astronvim and configs

* feat(nvim): new, custom nvim configuration

config/nvim/lua/autocmd.lua

@@ -0,0 +1,31 @@
+local vim = vim
+local api = vim.api
+local M = {}
+
+--- function to create a list of commands and convert them to autocommands
+--- This function is taken from https://github.com/norcalli/nvim_utils
+function M.nvim_create_augroups(definitions)
+  for group_name, definition in pairs(definitions) do
+    api.nvim_command("augroup " .. group_name)
+    api.nvim_command("autocmd!")
+    for _, def in ipairs(definition) do
+      local command = table.concat(vim.tbl_flatten({ "autocmd", def }), " ")
+      api.nvim_command(command)
+    end
+    api.nvim_command("augroup END")
+  end
+end
+
+local autoCommands = {
+  -- To save the current session (may be restored later).
+  -- autocmd! VimLeavePre * :mks! ~/.config/nvim/session.vim
+  save_session = {
+    { "VimLeavePre", "*", ":mks! ~/.local/state/nvim/session.vim" },
+  },
+  -- other autocommands
+  open_folds = {
+    { "BufReadPost,FileReadPost", "*", "normal zR<cr>" },
+  },
+}
+
+M.nvim_create_augroups(autoCommands)