[WHICH-KEY] Add SymbolsOutline mapping. (#599)

lua/lv-which-key/init.lua

@@ -213,7 +213,8 @@ local mappings = {
         r = {"<cmd>Lspsaga rename<cr>", "Rename"},
         t = {"<cmd>LspTypeDefinition<cr>", "Type Definition"},
         x = {"<cmd>cclose<cr>", "Close Quickfix"},
-        s = {"<cmd>Telescope lsp_document_symbols<cr>", "Document Symbols"},
+        s = {O.plugin.symbol_outline.active and "<cmd>SymbolsOutline<cr>" or
+            "<cmd> Telescope lsp_document_symbols<cr>", "Document Symbols"},
         S = {
             "<cmd>Telescope lsp_dynamic_workspace_symbols<cr>",
             "Workspace Symbols"