Add Luci Theme argon and app

- Also added missing depends from source: https://dl.openwrt.ai/packages-24.10/aarch64_cortex-a53/

- Argon theme and app source:
https://github.com/jerrykuku/luci-theme-argon

ipk-source/luci-theme-argon/CONTROL/postinst-pkg

@@ -0,0 +1,5 @@
+[ -n "${IPKG_INSTROOT}" ] || { rm -f /tmp/luci-indexcache.*
+	rm -rf /tmp/luci-modulecache/
+	killall -HUP rpcd 2>/dev/null
+	exit 0
+}