Merge 'upstream' timeoutlen, cmp scroll, friendly snippets, luasnip, ruby

Merged:
- fix: disable ts indenting for Ruby
- doc: add note about advanced luasnip features
- Move friendly snippets to dependencies of LuaSnip (#759)
- Add <C-b>/<C-f> cmp mapping to scroll cmp docs (#750)
- doc: add info about timeoutlen (#691)

lua/kickstart/plugins/treesitter.lua

@@ -6,8 +6,14 @@ return {
       ensure_installed = { 'bash', 'c', 'html', 'lua', 'markdown', 'vim', 'vimdoc' },
       -- Autoinstall languages that are not installed
       auto_install = true,
-      highlight = { enable = true },
-      indent = { enable = true },
+      highlight = {
+        enable = true,
+        -- Some languages depend on vim's regex highlighting system (such as Ruby) for indent rules.
+        --  If you are experiencing weird indenting issues, add the language to
+        --  the list of additional_vim_regex_highlighting and disabled languages for indent.
+        additional_vim_regex_highlighting = { 'ruby' },
+      },
+      indent = { enable = true, disable = { 'ruby' } },
     },
     config = function(_, opts)
       -- [[ Configure Treesitter ]] See `:help nvim-treesitter`