Add ImGuiTextSelect (#5108)

* Add ImGuiTextSelect

* Fix on_test

packages/i/imguitextselect/xmake.lua

@@ -0,0 +1,44 @@
+package("imguitextselect")
+    set_homepage("https://github.com/AidanSun05/ImGuiTextSelect")
+    set_description("Text selection implementation for Dear ImGui")
+    set_license("MIT")
+
+    add_urls("https://github.com/AidanSun05/ImGuiTextSelect/archive/v$(version).tar.gz",
+             "https://github.com/AidanSun05/ImGuiTextSelect.git")
+    add_versions("1.1.2", "2e15853e97710f02be9fdb64fd2f2ad495e88f844ce5e8a14d63b86d9f2e7b6c")
+    add_versions("1.1.1", "ed36cb7bdbe248a5e0d9f73977b24eeb14d051dd385b273d25e4617aac303c29")
+    add_versions("1.1.0", "9464f5cdd118a77ecd64c21cad713ed4a729bae742750feb980d7c36e787d317")
+    add_versions("1.0.0", "198184dc562a868e748606e1b88c708491f04762413ddcb2d2a251a1cba38a43")
+
+    add_deps("imgui", "utfcpp")
+
+    on_install("windows", "linux", "macosx", "mingw", "android", "iphoneos", function (package)
+        io.writefile("xmake.lua", [[
+            add_requires("imgui", "utfcpp")
+            add_rules("mode.release", "mode.debug")
+            target("imguitextselect")
+                set_kind("$(kind)")
+                set_languages("c++20")
+                add_files("textselect.cpp")
+                add_headerfiles("textselect.hpp")
+                add_packages("imgui", "utfcpp")
+                if is_plat("windows") and is_kind("shared") then
+                    add_rules("utils.symbols.export_all", {export_classes = true})
+                end
+        ]])
+        import("package.tools.xmake").install(package)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <cstddef>
+            #include <string_view>
+            #include <textselect.hpp>
+            void test() {
+                auto getLineAtIdx = [](std::size_t) { return std::string_view{}; };
+                auto getNumLines = []() { return (std::size_t)0; };
+                TextSelect textSelect{ getLineAtIdx, getNumLines };
+                textSelect.update();
+            }
+        ]]}, {configs = {languages = "c++20"}}))
+    end)