Ports: Add port for harfbuzz

Ports/harfbuzz/package.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=harfbuzz
+useconfigure=true
+version=2.8.1
+depends="freetype libicu"
+configopts="-DCMAKE_TOOLCHAIN_FILE=$SERENITY_SOURCE_DIR/Toolchain/CMake/CMakeToolchain.txt -DHB_HAVE_FREETYPE=ON -DHB_HAVE_ICU=ON"
+files="https://github.com/harfbuzz/harfbuzz/releases/download/${version}/harfbuzz-${version}.tar.xz harfbuzz-${version}.tar.xz 4124f663ec4bf4e294d9cf230668370b4249a48ff34deaf0f06e8fc82d891300"
+auth_type=sha256
+
+configure() {
+    run mkdir -p build
+    run sh -c "cd build && cmake $configopts .."
+}
+
+build() {
+    run sh -c "cd build && make $makeopts"
+}
+
+install() {
+    run sh -c "cd build && make install"
+}

Ports/harfbuzz/patches/unused.patch

@@ -0,0 +1,12 @@
+diff -Naur harfbuzz-2.8.1/src/hb-buffer.hh harfbuzz-2.8.1.serenity/src/hb-buffer.hh
+--- harfbuzz-2.8.1/src/hb-buffer.hh	2021-05-04 02:09:38.000000000 +0200
++++ harfbuzz-2.8.1.serenity/src/hb-buffer.hh	2021-05-08 05:22:34.579810445 +0200
+@@ -166,7 +166,7 @@
+ #ifndef HB_NDEBUG
+     unsigned int end = start + count;
+     assert (end <= 8);
+-    unsigned int bits = (1u<<end) - (1u<<start);
++    [[maybe_unused]] unsigned int bits = (1u<<end) - (1u<<start);
+     assert (bits == (allocated_var_bits & bits));
+ #endif
+   }