Integrate GH-related Sphinx roles via `extlinks` #217

Job	Run time
Linter	57s
Test (3.7, ubuntu, false)	32s
Test (3.7, macos, false)	1m 3s
Test (3.7, windows, false)	1m 51s
Test (3.7, Y, ubuntu, false)	31s
Test (3.8, ubuntu, false)	30s
Test (3.8, macos, false)	1m 6s
Test (3.8, windows, false)	1m 49s
Test (3.8, Y, ubuntu, false)	25s
Test (3.9, ubuntu, false)	35s
Test (3.9, macos, false)	1m 4s
Test (3.9, windows, false)	1m 55s
Test (3.9, Y, ubuntu, false)	29s
Test (3.10, ubuntu, false)	31s
Test (3.10, macos, false)	56s
Test (3.10, windows, false)	2m 4s
Test (3.10, Y, ubuntu, false)	30s
Test (3.11, ubuntu, false)	35s
Test (3.11, macos, false)	57s
Test (3.11, windows, false)	2m 6s
Test (3.11, Y, ubuntu, false)	21s
Test (pypy-3.9, Y, false, ubuntu)	50s
Test (pypy-3.8, Y, false, ubuntu)	58s
Test (3.12-dev, true, ubuntu)	36s
Test (3.12-dev, Y, true, ubuntu)	23s
Tests status	2s
Pre-Deploy	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Tarball	0s
Deploy	0s
	23m 36s

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