oneshot: add package (#8617)

* oneshot: add package

* Drop wasm support

---------

Co-authored-by: Saikari <lin@sz.cn.eu.org>

Author: gibbz00

packages/o/oneshot/xmake.lua

@@ -0,0 +1,33 @@
+package("oneshot")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/ashtum/oneshot")
+    set_description("A single-header scheduler aware C++ oneshot channel.")
+    set_license("BSL-1.0")
+
+    add_urls("https://github.com/ashtum/oneshot.git")
+
+    add_versions("2025.11.14", "57ab00d924d6436e3ee649be1a14a349fb52a8d0")
+
+    add_configs("asio_standalone", {description = "Use standalone asio.", default = false, type = "boolean"})
+
+    on_load(function (package)
+        if package:config("asio_standalone") then
+            package:add("defines", "ONESHOT_ASIO_STANDALONE")
+            package:add("deps", "asio")
+        else
+            package:add("deps", "boost", {configs = {asio = true}})
+        end
+    end)
+
+    on_install("!wasm", function (package)
+        os.cp("include", package:installdir())
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <oneshot.hpp>
+            void test() {
+                auto [sender, receiver] = oneshot::create<std::string>();
+            }
+        ]]}, {configs = {languages = "cxx17"}}))
+    end)