Implement SEP-990 Enterprise Managed OAuth #829

Job	Run time
checks / pre-commit	32s
checks / readme-snippets	14s
checks / test (3.11, lowest-direct, windows-latest)	2m 27s
checks / test (3.10, locked, ubuntu-latest)	49s
checks / test (3.10, locked, windows-latest)	2m 2s
checks / test (3.13, lowest-direct, windows-latest)	5m 25s
checks / test (3.12, lowest-direct, windows-latest)	3m 16s
checks / test (3.10, lowest-direct, windows-latest)	2m 25s
checks / test (3.10, lowest-direct, ubuntu-latest)	57s
checks / test (3.11, lowest-direct, ubuntu-latest)	55s
checks / test (3.11, locked, windows-latest)	2m 19s
checks / test (3.11, locked, ubuntu-latest)	49s
checks / test (3.13, locked, ubuntu-latest)	50s
checks / test (3.12, lowest-direct, ubuntu-latest)	57s
checks / test (3.12, locked, ubuntu-latest)	54s
checks / test (3.14, locked, ubuntu-latest)	2m 11s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 11s
checks / test (3.13, lowest-direct, ubuntu-latest)	50s
checks / test (3.14, lowest-direct, windows-latest)	2m 12s
checks / test (3.14, locked, windows-latest)	2m 59s
checks / test (3.12, locked, windows-latest)	3m 3s
checks / test (3.13, locked, windows-latest)	2m 20s
all-green	6s
	39m 43s

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