Separate build script from install script #4458

The --build-from-source flag is now deprecated and will soon
be removed along with the need to define an install script.

This will remove a whole category of package manager
warnings about install scripts and "built" dependencies.

Most people don't need to build sharp from source, but for
those that do, a suitable method is now something like:

$ npm install package-that-depends-on-sharp
$ npm explore sharp -- npm run build

package.json

@@ -92,7 +92,8 @@
     "Don Denton <don@happycollision.com>"
   ],
   "scripts": {
-    "install": "node install/check.js",
+    "build": "node install/build.js",
+    "install": "node install/check.js || npm run build",
     "clean": "rm -rf src/build/ .nyc_output/ coverage/ test/fixtures/output.*",
     "test": "npm run lint && npm run test-unit",
     "lint": "npm run lint-cpp && npm run lint-js && npm run lint-types",
@@ -139,7 +140,7 @@
   ],
   "dependencies": {
     "@img/colour": "^1.0.0",
-    "detect-libc": "^2.1.0",
+    "detect-libc": "^2.1.1",
     "semver": "^7.7.2"
   },
   "optionalDependencies": {
@@ -167,7 +168,7 @@
     "@img/sharp-win32-x64": "0.34.4"
   },
   "devDependencies": {
-    "@biomejs/biome": "^2.2.4",
+    "@biomejs/biome": "^2.2.5",
     "@cpplint/cli": "^0.1.0",
     "@emnapi/runtime": "^1.5.0",
     "@img/sharp-libvips-dev": "1.2.3",
@@ -180,7 +181,7 @@
     "exif-reader": "^2.0.2",
     "extract-zip": "^2.0.1",
     "icc": "^3.0.0",
-    "jsdoc-to-markdown": "^9.1.2",
+    "jsdoc-to-markdown": "^9.1.3",
     "node-addon-api": "^8.5.0",
     "node-gyp": "^11.4.2",
     "tar-fs": "^3.1.1",