Add GLI dep (#827)

* Add GLI dep

* Fix style issues

* Revert "Fix style issues"

This reverts commit 05d2c5120a.

* Fix style issues

packages/g/gli/xmake.lua

@@ -0,0 +1,46 @@
+package("gli")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://gli.g-truc.net/")
+    set_description("OpenGL Image (GLI)")
+
+    set_urls("https://github.com/g-truc/gli/archive/$(version).tar.gz", 
+             {version = function(version) return version:gsub("%+", ".") end})
+    add_urls("https://github.com/g-truc/gli.git")
+    add_versions("0.8.2.0", "a11067c7c457cfd0fb64fd330ce0308fbf222f731f6c8b500ebb6e69449fcc3f")
+
+    add_deps("glm")
+
+    if is_plat("linux") then
+        add_syslinks("m")
+    end
+
+    on_install(function (package)
+        os.rm("gli/CMakeLists.txt")
+        io.writefile("xmake.lua", [[
+            add_requires("glm")
+            add_rules("mode.debug", "mode.release")
+            target("gli")
+                set_kind("headeronly")
+                add_headerfiles("gli/(**.hpp)", "gli/(**.inl)", {prefixdir = "gli"})
+                add_includedirs("gli", {public = true})
+                add_rules("utils.install.cmake_importfiles")
+                add_rules("utils.install.pkgconfig_importfiles")
+        ]])
+
+        local configs = {}
+        if package:config("shared") then
+            configs.kind = "shared"
+        end
+        import("package.tools.xmake").install(package, config)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+              void test() {
+                  gli::vec4 const Color(1.0f, 0.5f, 0.0f, 1.0f);
+                  gli::texture2d Texture(gli::FORMAT_R16_SFLOAT_PACK16, gli::texture2d::extent_type(1), 1);
+                  gli::detail::convertFunc<gli::texture2d, float, 1, gli::u16, gli::defaultp, gli::detail::CONVERT_MODE_HALF, true>::write(Texture, gli::texture2d::extent_type(0), 0, 0, 0, Color);
+                  gli::vec4 Texel = gli::detail::convertFunc<gli::texture2d, float, 1, gli::u16, gli::defaultp, gli::detail::CONVERT_MODE_HALF, true>::fetch(Texture, gli::texture2d::extent_type(0), 0, 0, 0);
+              }
+        ]]}, {configs = {languages = "c++11"}, includes = {"gli/gli.hpp"}}))
+    end)