feat: the parameter "map" of attach_mappings can be list of modes to create mapping on multiple modes (#2220)

(cherry picked from commit d541e0d6e0)

doc/telescope.txt

@@ -1775,6 +1775,11 @@ ordered from the lowest priority to the highest priority.
       map("i", "asdf", function(_prompt_bufnr)
         print "You typed asdf"
       end)
+
+      map({"i", "n"}, "<C-r>", function(_prompt_bufnr)
+        print "You typed <C-r>"
+      end)
+
       -- needs to return true if you want to map default_mappings and
       -- false if not
       return true