[chaiscript] Initial port

ports/chaiscript/CONTROL

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+Source: chaiscript
+Version: 6.0.0
+Description: Embedded Scripting Language Designed for C++

ports/chaiscript/portfile.cmake

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+# Common Ambient Variables:
+#   CURRENT_BUILDTREES_DIR    = ${VCPKG_ROOT_DIR}\buildtrees\${PORT}
+#   CURRENT_PACKAGES_DIR      = ${VCPKG_ROOT_DIR}\packages\${PORT}_${TARGET_TRIPLET}
+#   CURRENT_PORT_DIR          = ${VCPKG_ROOT_DIR}\ports\${PORT}
+#   PORT                      = current port name (zlib, etc)
+#   TARGET_TRIPLET            = current triplet (x86-windows, x64-windows-static, etc)
+#   VCPKG_CRT_LINKAGE         = C runtime linkage type (static, dynamic)
+#   VCPKG_LIBRARY_LINKAGE     = target library linkage type (static, dynamic)
+#   VCPKG_ROOT_DIR            = <C:\path\to\current\vcpkg>
+#   VCPKG_TARGET_ARCHITECTURE = target architecture (x64, x86, arm)
+#
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO ChaiScript/ChaiScript
+    REF v6.0.0
+    SHA512 612c175b9ee357512addcbe9ce0e2b9c34c40a45b5be85a3f75e2c0d391bc845996e2559c401e4899088b3e641c6c5b34af233bf2fd48d4de4531ea2815e2a96
+    HEAD_REF master
+)
+
+file(INSTALL ${SOURCE_PATH}/include/ DESTINATION ${CURRENT_PACKAGES_DIR}/include/)
+
+# Handle copyright
+file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/chaiscript RENAME copyright)