Build deltachat-rpc-server binaries #162

Job	Run time
macOS (x86_64)	5m 34s
Linux (aarch64)	4m 32s
macOS (aarch64)	5m 0s
Linux (armv7l)	29m 23s
Windows (win32)	4m 33s
Android (arm64-v8a)	5m 33s
Linux (armv6l)	9m 30s
Windows (win64)	7m 45s
Android (armeabi-v7a)	7m 45s
Linux (i686)	9m 34s
Linux (x86_64)	8m 51s
Build & Publish npm prebuilds and deltachat-rpc-server	55s
Build wheels and upload binaries to the release	1m 46s
	1h 40m 41s

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