[libyaml] Add new port for libyaml v0.2.1 (microsoft#4484)

* [libyaml] Add new port for libyaml v0.2.1

* [libyaml] Cleanup

ports/libyaml/0001-fix-version.patch

@@ -0,0 +1,15 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 1abdd77..60a6b44 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -3,8 +3,8 @@ cmake_minimum_required(VERSION 3.0)
+ project (yaml C)
+
+ set (YAML_VERSION_MAJOR 0)
+-set (YAML_VERSION_MINOR 1)
+-set (YAML_VERSION_PATCH 7)
++set (YAML_VERSION_MINOR 2)
++set (YAML_VERSION_PATCH 1)
+ set (YAML_VERSION_STRING "${YAML_VERSION_MAJOR}.${YAML_VERSION_MINOR}.${YAML_VERSION_PATCH}")
+
+ option(BUILD_SHARED_LIBS "Build libyaml as a shared library" OFF)

ports/libyaml/CONTROL

@@ -0,0 +1,3 @@
+Source: libyaml
+Version: 0.2.1-1
+Description: A C library for parsing and emitting YAML.

ports/libyaml/portfile.cmake

@@ -0,0 +1,23 @@
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO yaml/libyaml
+    REF 0.2.1
+    SHA512 8b91738183a6d81c2c0381b4279cff9d8f811dac643ce5e08aa869058f5653ad8a2d9d8f9e563b26ad75b617b80b10ccb32753984a50ed684529a90bdd248bff
+    HEAD_REF master
+    PATCHES 0001-fix-version.patch
+)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+)
+
+vcpkg_install_cmake()
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include ${CURRENT_PACKAGES_DIR}/include/config.h)
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH cmake)
+
+configure_file(${SOURCE_PATH}/LICENSE ${CURRENT_PACKAGES_DIR}/share/libyaml/copyright COPYONLY)