perf: new file-based cache that ensures correct rtp order (#532)

* perf: new file-based cache that ensures rtp is alweays correct and will cache all files, including those after startup

* refactor: new cache

* test: fix tests

* fix(cache): cache file names on Windows

* feat(cache): allow to disable the cache

* docs: updated cache settings

lua/lazy/core/config.lua

@@ -113,8 +113,9 @@ M.defaults = {
     notify = true, -- get a notification when changes are found
   },
   performance = {
-    ---@type LazyCacheConfig
-    cache = nil,
+    cache = {
+      enabled = true,
+    },
     reset_packpath = true, -- reset the package path to improve startup time
     rtp = {
       reset = true, -- reset the runtime path to $VIMRUNTIME and your config directory
@@ -226,7 +227,6 @@ function M.setup(opts)
     pattern = "VeryLazy",
     once = true,
     callback = function()
-      require("lazy.core.cache").autosave()
       require("lazy.view.commands").setup()
       if M.options.change_detection.enabled then
         require("lazy.manage.reloader").enable()