added floating terminal and snacks

lua/custom/plugins/floating-terminal.lua

@@ -0,0 +1,50 @@
+vim.keymap.set('t', '<esc><esc>', '<c-\\><c-n>')
+local state = {
+  floating = {
+    buf = -1,
+    win = -1,
+  },
+}
+
+local function create_floating_window(opts)
+  opts = opts or {}
+  local width = opts.width or math.floor(vim.o.columns * 0.8)
+  local height = opts.heighh or math.floor(vim.o.lines * 0.8)
+
+  local col = math.floor((vim.o.columns - width) / 2)
+  local row = math.floor((vim.o.lines - height) / 2)
+
+  local buf = nil
+  if vim.api.nvim_buf_is_valid(opts.buf) then
+    buf = opts.buf
+  else
+    buf = vim.api.nvim_create_buf(false, true)
+  end
+
+  local win_config = {
+    relative = 'editor',
+    width = width,
+    height = height,
+    col = col,
+    row = row,
+    style = 'minimal',
+    border = 'rounded',
+  }
+
+  local win = vim.api.nvim_open_win(buf, true, win_config)
+  return { buf = buf, win = win }
+end
+
+local toggle_terminal = function()
+  if not vim.api.nvim_win_is_valid(state.floating.win) then
+    state.floating = create_floating_window { buf = state.floating.buf }
+    if vim.bo[state.floating.buf].buftype ~= 'terminal' then
+      vim.cmd.terminal()
+    end
+  else
+    vim.api.nvim_win_hide(state.floating.win)
+  end
+end
+
+vim.api.nvim_create_user_command('Floaterminal', toggle_terminal, {})
+vim.keymap.set({ 'n', 't' }, '<space>tt', toggle_terminal)