added icon and .desktop file to DSA arch package

resources/dsa.desktop

@@ -0,0 +1,7 @@
+[Desktop Entry]
+Type=Application
+Name=Damn Simple Architecture
+Comment=Damn Simple Architecture Emulator
+Exec=dsa
+Icon=dsa
+Categories=Development;

resources/publish.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+makepkg
+
+# load .env
+. ./.env
+
+for pkg in *.pkg.tar.zst; do
+    curl --user $USERNAME:$PASSWORD \
+        --upload-file "$pkg" \
+        https://git.zxq5.dev/api/packages/zxq5/arch/core
+done