add littlefs (#1301)

* add littlefs

* disable error

* disable error

packages/l/littlefs/xmake.lua

@@ -0,0 +1,29 @@
+package("littlefs")
+    set_homepage("https://github.com/littlefs-project/littlefs")
+    set_description("A little fail-safe filesystem designed for microcontrollers")
+
+    add_urls("https://github.com/littlefs-project/littlefs/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/littlefs-project/littlefs.git")
+    add_versions("v2.5.0", "07de0d788c2a849a137715b48cce9daeb3fdc7570873ac6faae4566432e140c8")
+
+    on_install(function (package)
+        local configs = {}
+        io.writefile("xmake.lua", [[
+            add_rules("mode.release", "mode.debug")
+            target("littlefs")
+               set_kind("$(kind)")
+               add_files("*.c")
+               add_headerfiles("*.h")
+               if is_plat("windows") then
+                   add_defines("LFS_NO_ERROR", "LFS_NO_DEBUG", "LFS_NO_WARN")
+               end
+        ]])
+        if package:config("shared") then
+            configs.kind = "shared"
+        end
+        import("package.tools.xmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("lfs_mount", {includes = "lfs.h"}))
+    end)