Address review comments

This splits the Linux workflow and build script into linux and linux-arm64.

.ci/linux-arm64.sh

@@ -0,0 +1,21 @@
+#!/bin/sh -ex
+
+mkdir build && cd build
+ cmake .. -G Ninja \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_C_COMPILER=aarch64-linux-gnu-gcc-11 \
+    -DCMAKE_CXX_COMPILER=aarch64-linux-gnu-g++-11 \
+    -DCMAKE_C_COMPILER_LAUNCHER=ccache \
+    -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
+    -DENABLE_ASM=OFF \
+    -DENABLE_QT_TRANSLATION=ON \
+    -DCITRA_ENABLE_COMPATIBILITY_REPORTING=ON \
+    -DCITRA_ENABLE_BUNDLE_TARGET=OFF \
+    -DENABLE_COMPATIBILITY_LIST_DOWNLOAD=ON \
+    -DUSE_DISCORD_PRESENCE=ON
+ninja
+
+DESTDIR="$PWD/AppDir" ninja install
+7z a AppDir.7z AppDir
+mkdir bundle
+mv AppDir.7z ./bundle