Support streamlined paths for duckdb-wasm #58

Job	Run time
Build extension binaries / Generate matrix	39s
Build extension binaries / Linux (linux_amd64, ubuntu:18.04, x64-linux)	14m 13s
Build extension binaries / Windows (windows_amd64, x64-windows-static-md)	18m 59s
Build extension binaries / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	4m 29s
Build extension binaries / DuckDB-Wasm (wasm_mvp, wasm32-emscripten)	1m 52s
Build extension binaries / MacOS (osx_amd64, x86_64, x64-osx)	10m 55s
Build extension binaries / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	17m 5s
Build extension binaries / DuckDB-Wasm (wasm_eh, wasm32-emscripten)	1m 54s
Build extension binaries / MacOS (osx_arm64, arm64, arm64-osx)	4m 39s
Build extension binaries / DuckDB-Wasm (wasm_threads, wasm32-emscripten)	1m 36s
Deploy extension binaries / Generate matrix	19s
Deploy extension binaries / Deploy (linux_amd64)	29s
Deploy extension binaries / Deploy (linux_amd64_gcc4)	29s
Deploy extension binaries / Deploy (linux_arm64)	31s
Deploy extension binaries / Deploy (osx_amd64)	30s
Deploy extension binaries / Deploy (osx_arm64)	28s
Deploy extension binaries / Deploy (windows_amd64)	1m 13s
Deploy extension binaries / Deploy (wasm_mvp)	28s
Deploy extension binaries / Deploy (wasm_eh)	24s
Deploy extension binaries / Deploy (wasm_threads)	26s
	1h 21m 38s

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