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-app-argon-config/root/etc/config/argon

@@ -0,0 +1,9 @@
+config global
+	option primary '#5e72e4'
+	option dark_primary '#483d8b'
+	option blur '10'
+	option blur_dark '10'
+	option transparency '0.5'
+	option transparency_dark '0.5'
+	option mode 'normal'
+	option bing_background '0'