docker: Improved build times by disabling unnecessary libraries

This can definitely be further improved, as there are Citra components which are also built unnecessarily, but that would require invasive CMake changes which are out of scope for this PR.

docker/azahar-room/Dockerfile

@@ -7,7 +7,16 @@ FROM opensauce04/azahar-build-environment:latest AS builder
 COPY . /var/azahar-src
 
 RUN mkdir builddir && cd builddir && \
-    cmake /var/azahar-src -DENABLE_QT=OFF -DENABLE_TESTS=OFF -DENABLE_ROOM=ON -DENABLE_ROOM_STANDALONE=ON && \
+    cmake /var/azahar-src -DENABLE_QT=OFF \
+                          -DENABLE_TESTS=OFF \
+                          -DENABLE_ROOM=ON \
+                          -DENABLE_ROOM_STANDALONE=ON \
+                          -DENABLE_OPENGL=OFF $(:"TODO: Can we disable these automatically when there's no frontend?") \
+                          -DENABLE_VULKAN=OFF \
+                          -DENABLE_SDL2=OFF \
+                          -DENABLE_LIBUSB=OFF \
+                          -DENABLE_CUBEB=OFF \
+                          -DENABLE_OPENAL=OFF && \
     cmake --build . -j$(nproc) && \
     mv bin/Release/azahar-room /usr/local/bin/ && \
     cd .. && rm -rf builddir