Ports: Add libuv

We've had a half-arsed port of libuv inside the cmake port, but let's
just port it properly.
Note that this pins a specific commit (which is currently the latest
commit in their default branch).

Ports/libuv/package.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=libuv
+version=b12699b1efabfd241324f4ab6cfd6ce576db491e
+useconfigure=true
+files="https://github.com/libuv/libuv/archive/$version.tar.gz $port-$version.tar.gz bbbfa2bb50437047efc8fb29c243c914ae0de94107d7cc641c2f84e292904eb5"
+auth_type=sha256
+configopts="-DCMAKE_TOOLCHAIN_FILE=$SERENITY_SOURCE_DIR/Toolchain/CMake/CMakeToolchain.txt -GNinja"
+
+configure() {
+    run cmake $configopts .
+}
+
+build() {
+    run ninja
+}
+
+install() {
+    run ninja install
+}