[node-api-headers] add usage (#31186)

* [node-api-headers] add usage

* port-ver

* .

* .

* Update usage

* Update node-api-headers.json

ports/node-api-headers/portfile.cmake

@@ -16,4 +16,6 @@ file(INSTALL "${SOURCE_PATH}/include" DESTINATION "${CURRENT_PACKAGES_DIR}/inclu
 
 file(INSTALL "${SOURCE_PATH}/LICENSE" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}" RENAME copyright)
 
+file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/usage" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
+
 configure_file("${CMAKE_CURRENT_LIST_DIR}/unofficial-${PORT}-config.cmake.in" "${CURRENT_PACKAGES_DIR}/share/unofficial-${PORT}/unofficial-${PORT}-config.cmake" @ONLY)

ports/node-api-headers/usage

@@ -0,0 +1,23 @@
+node-api-headers provides CMake targets:
+
+    find_package(unofficial-node-api-headers CONFIG REQUIRED)
+    target_link_libraries(main PRIVATE unofficial::node-api-headers::node-api-headers)
+
+Add this to your CMakeLists.txt to build a Node.js addon:
+    add_library(addon SHARED main.cpp ...)
+    set_target_properties(addon PROPERTIES OUTPUT_NAME "my-addon" PREFIX "" SUFFIX ".node")
+
+    find_package(unofficial-node-api-headers CONFIG REQUIRED)
+    target_link_libraries(addon PRIVATE unofficial::node-api-headers::node-api-headers)
+
+You will be able to load your addon in JavaScript code:
+    const addon = require("/path/to/addon/my-addon.node");
+
+Make sure that your Node.js OS/architecture matches vcpkg triplet you use.
+
+Also, make sure to register a module in your C/C++ code like official example does:
+https://github.com/nodejs/node-addon-examples/blob/main/1_hello_world/napi/hello.c
+
+This port doesn't have specific functionality for publishing npm packages.
+
+See https://nodejs.org/api/n-api.html

ports/node-api-headers/vcpkg.json

@@ -1,6 +1,7 @@
 {
   "name": "node-api-headers",
   "version": "1.0.0",
+  "port-version": 1,
   "description": "NodeJS API for writing modules in C++",
   "homepage": "https://nodejs.org/api/addons.html",
   "license": "MIT",

versions/baseline.json

@@ -5594,7 +5594,7 @@
     },
     "node-api-headers": {
       "baseline": "1.0.0",
-      "port-version": 0
+      "port-version": 1
     },
     "nonius": {
       "baseline": "2019-04-20",

versions/n-/node-api-headers.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "273191974015356594e8288781f46c01fd882d43",
+      "version": "1.0.0",
+      "port-version": 1
+    },
     {
       "git-tree": "a38314df5ed9495e8e15abc596a5cd75e0116824",
       "version": "1.0.0",