Add xmake as build system

xmake.lua

@@ -0,0 +1,50 @@
+add_rules("mode.debug", "mode.release")
+
+option("static")
+    set_default(false)
+    set_showmenu(true)
+    set_category("option")
+    set_description("Build static binary.")
+option_end()
+
+add_requires("libcurl >=8.4.0", "pcre2", "yaml-cpp", "rapidjson", "toml11", "quickjspp")
+includes("xmake/libcron.lua")
+includes("xmake/yaml-cpp-static.lua")
+add_requires("libcron", {system = false})
+add_requires("yaml-cpp-static", {system = false})
+
+target("subconverter")
+    set_kind("binary")
+    if is_os("windows") then
+        add_syslinks("ws2_32", "wsock32")
+    end
+    if not is_os("macosx") and has_config("static") then
+        add_ldflags("-static")
+    end
+    add_files("src/**.cpp|lib/wrapper.cpp|server/webserver_libevent.cpp|script/script.cpp|generator/template/template_jinja2.cpp")
+    add_includedirs("src")
+    add_includedirs("include")
+    add_packages("libcurl", "pcre2", "rapidjson", "toml11", "libcron", "quickjspp")
+    if has_config("static") then
+        add_packages("yaml-cpp-static")
+    else
+        add_packages("yaml-cpp")
+    end
+    add_defines("CURL_STATICLIB")
+    add_defines("PCRE2_STATIC")
+    add_defines("YAML_CPP_STATIC_DEFINE")
+    add_cxxflags("-std=c++20")
+
+target("subconverter_lib")
+    set_basename("subconverter")
+    set_kind("static")
+    add_files("src/**.cpp|handler/**.cpp|server/**.cpp|script/**.cpp|generator/template/template_jinja2.cpp")
+    add_includedirs("src")
+    add_includedirs("include")
+    add_packages("pcre2", "yaml-cpp", "rapidjson", "toml11")
+    add_defines("CURL_STATICLIB")
+    add_defines("PCRE2_STATIC")
+    add_defines("YAML_CPP_STATIC_DEFINE")
+    add_defines("NO_JS_RUNTIME")
+    add_defines("NO_WEBGET")
+    add_cxxflags("-std=c++20")