add(core): add key binding to toggle auto parens mode

Problem: there is no key binding to toggle auto parens mode
Solution: add `SPC t P` to toggle auto parens mode

close https://github.com/SpaceVim/SpaceVim/issues/4312

autoload/SpaceVim/layers/ui.vim

@@ -260,7 +260,9 @@ function! SpaceVim#layers#ui#config() abort
   call SpaceVim#mapping#space#def('nnoremap', ['t', 'p'],
         \ 'call SpaceVim#layers#core#statusline#toggle_mode("paste-mode")',
         \ 'toggle-paste-mode', 1)
-
+  call SpaceVim#mapping#space#def('nnoremap', ['t', 'P'],
+        \ 'DelimitMateSwitch',
+        \ 'toggle-auto-parens-mode', 1)
 
   call SpaceVim#mapping#space#def('nnoremap', ['t', 'l'], 'setlocal list!',
         \ 'toggle-hidden-listchars', 1)

docs/cn/documentation.md

@@ -516,6 +516,7 @@ SpaceVim 在终端下默认使用了真色，因此使用之前需要确认下
 | `SPC t b`   | 切换背景色                                |
 | `SPC t c`   | 切换 conceal 模式                         |
 | `SPC t p`   | 切换 paste 模式                           |
+| `SPC t P`   | 切换 auto parens 模式                           |
 | `SPC t t`   | 打开 Tab 管理器                           |
 | `SPC T ~`   | 显示/隐藏 Buffer 结尾空行行首的 `~`       |
 | `SPC T F`   | 切换全屏(TODO)                            |

docs/documentation.md

@@ -570,6 +570,7 @@ Some UI indicators can be toggled on and off (toggles start with t and T):
 | `SPC t b`    | toggle background                                                          |
 | `SPC t c`    | toggle conceal                                                             |
 | `SPC t p`    | toggle paste mode                                                          |
+| `SPC t P`    | toggle auto parens mode                                                          |
 | `SPC t t`    | open tabs manager                                                          |
 | `SPC T ~`    | display ~ in the fringe on empty lines                                     |
 | `SPC T F`    | toggle frame fullscreen                                                    |