Ports: Add SDL_sound

Ports/SDL_sound/package.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=SDL_sound
+version=git
+workdir=SDL_sound-main
+useconfigure=true
+deps="SDL2"
+files="https://github.com/icculus/SDL_sound/archive/refs/heads/main.zip main.zip f8a322d090a172b9c66a41758f7ece850a8ff231058733a13e44bc380342651b"
+auth_type=sha256
+configopts="-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt"
+
+configure() {
+    run cmake $configopts
+}
+
+install() {
+    run make install
+}

Ports/SDL_sound/patches/fix_cmakelists.patch

@@ -0,0 +1,14 @@
+--- SDL_sound-main/CMakeLists.txt	2021-08-21 03:28:50.000000000 +0300
++++ SDL_sound-main.serenity/CMakeLists.txt	2021-09-18 15:59:24.321216126 +0300
+@@ -29,7 +29,10 @@
+     add_definitions(-xldscope=hidden)
+ endif()
+ 
+-find_package(SDL2 REQUIRED)
++INCLUDE(FindPkgConfig)
++
++PKG_SEARCH_MODULE(SDL2 REQUIRED sdl2)
++
+ include_directories(${SDL2_INCLUDE_DIRS} ${SDL2_INCLUDE_DIR})
+ if(WIN32)
+     # -lmingw32: gcc adds it automatically.