split makefile to move it upstream #89

Job	Run time
Build extension binaries / Generate matrix	22s
Build extension binaries / DuckDB-Wasm (wasm_mvp, wasm32-emscripten)	3m 55s
Build extension binaries / DuckDB-Wasm (wasm_eh, wasm32-emscripten)	4m 14s
Build extension binaries / Windows (windows_amd64, x64-windows-static-md)	17m 28s
Build extension binaries / MacOS (osx_amd64, x86_64, x64-osx)	7m 10s
Build extension binaries / DuckDB-Wasm (wasm_threads, wasm32-emscripten)	4m 6s
Build extension binaries / Windows (windows_amd64_rtools, x64-mingw-static)	39m 14s
Build extension binaries / Linux (linux_amd64, ubuntu:18.04, x64-linux)	15m 9s
Build extension binaries / MacOS (osx_arm64, arm64, arm64-osx)	6m 45s
Build extension binaries / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	4m 19s
Build extension binaries / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	18m 8s
Deploy extension binaries / Generate matrix	49s
Deploy extension binaries / Deploy (linux_amd64)	25s
Deploy extension binaries / Deploy (linux_amd64_gcc4)	28s
Deploy extension binaries / Deploy (linux_arm64)	28s
Deploy extension binaries / Deploy (osx_amd64)	27s
Deploy extension binaries / Deploy (osx_arm64)	29s
Deploy extension binaries / Deploy (windows_amd64)	27s
Deploy extension binaries / Deploy (windows_amd64_rtools)	29s
Deploy extension binaries / Deploy (wasm_mvp)	29s
Deploy extension binaries / Deploy (wasm_eh)	26s
Deploy extension binaries / Deploy (wasm_threads)	26s
	2h 6m 13s

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