Move duckdb specifics from workflow to Makefile #100

Job	Run time
Rust builds (using Delta extension) / Generate matrix	27s
Extension template / Generate matrix	25s
Extension template / Windows (windows_amd64, x64-windows-static-md)	56s
Extension template / MacOS (osx_amd64, x86_64, x64-osx)	1m 3s
Extension template / Windows (windows_amd64_rtools, x64-mingw-static)	55s
Extension template / Linux (linux_amd64, ubuntu:18.04, x64-linux)	23s
Extension template / DuckDB-Wasm (wasm_mvp, wasm32-emscripten)	55s
Extension template / MacOS (osx_arm64, arm64, arm64-osx)	1m 1s
Extension template / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	23s
Extension template / DuckDB-Wasm (wasm_eh, wasm32-emscripten)	55s
Extension template / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	23s
Extension template / DuckDB-Wasm (wasm_threads, wasm32-emscripten)	55s
Rust builds (using Delta extension) / MacOS (osx_amd64, x86_64, x64-osx)	1m 6s
Rust builds (using Delta extension) / Linux (linux_amd64, ubuntu:18.04, x64-linux)	22s
Rust builds (using Delta extension) / MacOS (osx_arm64, arm64, arm64-osx)	1m 2s
Rust builds (using Delta extension) / Windows	0s
Rust builds (using Delta extension) / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	22s
Rust builds (using Delta extension) / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	22s
Rust builds (using Delta extension) / DuckDB-Wasm	0s
	11m 55s

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