feat: try r2 instead of firebase #279

Job	Run time
prepare	4m 26s
Build (shdwmtr/dwmx)	23s
Build (apteryxxyz/steam-plugin-non-steam-playtimes)	34s
Build (luthor112/steam-collections-plus)	26s
Build (ricewind012/aerothemesteam)	31s
Build (BossSloth/SteamHunter-plugin)	35s
Build (AdamRaichu/auto-accept-custom-launch-args)	38s
Build (ricewind012/steam-browser-history)	31s
Build (alowave/millennium-faceit-stats)	30s
Build (BossSloth/AugmentedSteam-Extension-Plugin)	50s
Build (luthor112/steam-easygrid)	38s
Build (BossSloth/Steam-SteamDB-extension)	42s
Build (luthor112/steam-logo-pos)	23s
Build (luthor112/steam-taskbar-progress)	26s
Build (luthor112/steam-librarian)	35s
	12m 8s

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