add decimal_for_cpp 1.19 (#526)

* add decimal_for_cpp 1.19

* License

packages/d/decimal_for_cpp/xmake.lua

@@ -0,0 +1,18 @@
+package("decimal_for_cpp")
+
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/vpiotr/decimal_for_cpp")
+    set_description("Decimal data type support, for COBOL-like fixed-point operations on currency/money values.")
+    set_license("BSD-3-Clause")
+
+    add_urls("https://github.com/vpiotr/decimal_for_cpp.git")
+
+    add_versions("1.19", "2bcf48af509690579cf2b521af46e7fb0157c8da")
+
+    on_install(function (package)
+        os.cp("include/*.h", package:installdir("include/decimal_for_cpp"))
+    end)
+
+    on_test(function (package)
+        assert(package:has_cxxtypes("dec::decimal<2>", {configs = {languages = "c++11"}, includes = "decimal_for_cpp/decimal.h"}))
+    end)