[observer-ptr-lite] Add new port (0.4.0, was: 0.3.0) (#6652)

* [observer-ptr-lite] Add new port (0.3.0)

* Use dash in unit name for vcpkg_fixup_cmake_targets()

ports/observer-ptr-lite/CONTROL

@@ -0,0 +1,3 @@
+Source: observer-ptr-lite
+Version: 0.4.0
+Description: A C++17-like observer_ptr for C++98 and later in a single-file header-only library

ports/observer-ptr-lite/portfile.cmake

@@ -0,0 +1,31 @@
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO martinmoene/observer-ptr-lite
+    REF v0.4.0
+    SHA512 4e53d8e0ce595604880bda423440071e7c207dd63e7b6bfa09cc7a870a010f09c51c31e640142c565ce261c4911acab13c6e9f5970853ad8fc2da3e4034ab7d7
+)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS
+        -DNSOP_OPT_BUILD_TESTS=OFF
+        -DNSOP_OPT_BUILD_EXAMPLES=OFF
+)
+
+vcpkg_install_cmake()
+
+vcpkg_fixup_cmake_targets(
+    CONFIG_PATH lib/cmake/${PORT}
+)
+
+file(REMOVE_RECURSE
+    ${CURRENT_PACKAGES_DIR}/debug
+    ${CURRENT_PACKAGES_DIR}/lib
+)
+
+file(INSTALL
+    ${SOURCE_PATH}/LICENSE.txt DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright
+)