[clipper2] Add new port (#29303)

* [clipper2] Add new port

* [clipper2] Add usage. Static-only for windows

* [clipper2] Update hash

ports/clipper2/portfile.cmake

@@ -0,0 +1,25 @@
+if(VCPKG_TARGET_IS_WINDOWS)
+    vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
+endif()
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO AngusJohnson/Clipper2
+    REF "Clipper2_${VERSION}"
+    SHA512 e996ef8a2ec412189f0ba95a6f200c0818f9755930b05cd20b630d33760dec619c6a735ac056f5dfbaccf793bf6ebeb7b6c102fd9ff83b0d297a4d660389d8d9
+    HEAD_REF main
+)
+
+vcpkg_cmake_configure(
+    SOURCE_PATH "${SOURCE_PATH}/CPP"
+    OPTIONS
+        -DCLIPPER2_EXAMPLES=OFF
+        -DCLIPPER2_TESTS=OFF
+        -DCLIPPER2_UTILS=OFF
+)
+vcpkg_cmake_install()
+vcpkg_fixup_pkgconfig()
+
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
+
+vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE")

ports/clipper2/usage

@@ -0,0 +1,12 @@
+The package clipper2 can be imported via CMake FindPkgConfig module:
+
+    # Clipper2
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(Clipper2 REQUIRED IMPORTED_TARGET Clipper2)
+    target_link_libraries(main PkgConfig::Clipper2)
+
+    # Clipper2Z
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(Clipper2Z REQUIRED IMPORTED_TARGET Clipper2Z)
+    target_link_libraries(main PkgConfig::Clipper2Z)
+

ports/clipper2/vcpkg.json

@@ -0,0 +1,13 @@
+{
+  "name": "clipper2",
+  "version": "1.1.1",
+  "description": "Polygon Clipping and Offsetting",
+  "homepage": "http://www.angusj.com/clipper2",
+  "license": "BSL-1.0",
+  "dependencies": [
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    }
+  ]
+}

versions/baseline.json

@@ -1512,6 +1512,10 @@
       "baseline": "2019-04-30",
       "port-version": 2
     },
+    "clipper2": {
+      "baseline": "1.1.1",
+      "port-version": 0
+    },
     "clockutils": {
       "baseline": "1.1.1",
       "port-version": 1

versions/c-/clipper2.json

@@ -0,0 +1,9 @@
+{
+  "versions": [
+    {
+      "git-tree": "3768ef634c9d40c4bb981380ed16756c16eab600",
+      "version": "1.1.1",
+      "port-version": 0
+    }
+  ]
+}