feat(serve): Support obtaining billing usage #573

Job	Run time
MacOS	10m 40s
Linux	42m 20s
OpenWrt (aarch64_generic, https://downloads.openwrt.org/releases/22.03.2/targets/rockchip/armv8/o...	6m 10s
Build Docker Image	12s
OpenWrt (aarch64_cortex-a53, https://downloads.openwrt.org/releases/22.03.2/targets/bcm27xx/bcm27...	6m 25s
OpenWrt (aarch64_cortex-a72, https://downloads.openwrt.org/releases/22.03.2/targets/bcm27xx/bcm27...	6m 14s
OpenWrt (x86_64, https://downloads.openwrt.org/releases/18.06.9/targets/x86/64/openwrt-sdk-18.06....	4m 49s
OpenWrt (arm_cortex-a9, https://downloads.openwrt.org/releases/22.03.2/targets/bcm53xx/generic/op...	6m 12s
OpenWrt (arm_mpcore, https://downloads.openwrt.org/releases/22.03.2/targets/oxnas/ox820/openwrt-s...	5m 46s
OpenWrt (arm_cortex-a5_vfpv4, https://downloads.openwrt.org/releases/22.03.2/targets/at91/sama5/o...	5m 28s
OpenWrt (arm_cortex-a7_neon-vfpv4, https://downloads.openwrt.org/releases/22.03.2/targets/ipq40xx...	7m 34s
	1h 41m 50s

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