split makefile to move it upstream #84

Job	Run time
Build extension binaries / Generate matrix	20s
Build extension binaries / DuckDB-Wasm (wasm_mvp, wasm32-emscripten)	3m 55s
Build extension binaries / MacOS (osx_amd64, x86_64, x64-osx)	10m 15s
Build extension binaries / DuckDB-Wasm (wasm_eh, wasm32-emscripten)	4m 23s
Build extension binaries / Linux (linux_amd64, ubuntu:18.04, x64-linux)	15m 21s
Build extension binaries / Windows (windows_amd64, x64-windows-static-md)	21m 58s
Build extension binaries / MacOS (osx_arm64, arm64, arm64-osx)	6m 55s
Build extension binaries / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	4m 45s
Build extension binaries / DuckDB-Wasm (wasm_threads, wasm32-emscripten)	4m 11s
Build extension binaries / Windows (windows_amd64_rtools, x64-mingw-static)	47m 15s
Build extension binaries / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	17m 34s
Deploy extension binaries / Generate matrix	19s
Deploy extension binaries / Deploy (linux_amd64)	26s
Deploy extension binaries / Deploy (linux_amd64_gcc4)	25s
Deploy extension binaries / Deploy (linux_arm64)	29s
Deploy extension binaries / Deploy (osx_amd64)	27s
Deploy extension binaries / Deploy (osx_arm64)	29s
Deploy extension binaries / Deploy (windows_amd64)	30s
Deploy extension binaries / Deploy (windows_amd64_rtools)	31s
Deploy extension binaries / Deploy (wasm_mvp)	26s
Deploy extension binaries / Deploy (wasm_eh)	27s
Deploy extension binaries / Deploy (wasm_threads)	28s
	2h 21m 49s

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