refactor: moved handler to separate modules

lua/lazy/core/handler/keys.lua

@@ -0,0 +1,25 @@
+local Util = require("lazy.core.util")
+local Loader = require("lazy.core.loader")
+
+---@class LazyKeysHandler:LazyHandler
+local M = {}
+
+---@param plugin LazyPlugin
+---@param keys string
+function M:_add(plugin, keys)
+  vim.keymap.set("n", keys, function()
+    vim.keymap.del("n", keys)
+    Util.track({ keys = keys })
+    Loader.load(plugin, { keys = keys })
+    vim.api.nvim_input(keys)
+    Util.track()
+  end)
+end
+
+---@param _plugin LazyPlugin
+---@param value string
+function M:_del(_plugin, value)
+  pcall(vim.keymap.del, "n", value)
+end
+
+return M