docs: add bearer auth server example #2122

Job	Run time
checks / pre-commit	34s
checks / readme-snippets	11s
checks / test (3.10, locked, windows-latest)	2m 15s
checks / test (3.10, locked, ubuntu-latest)	49s
checks / test (3.12, lowest-direct, windows-latest)	4m 16s
checks / test (3.10, lowest-direct, windows-latest)	2m 23s
checks / test (3.11, locked, windows-latest)	2m 26s
checks / test (3.12, locked, ubuntu-latest)	56s
checks / test (3.13, locked, ubuntu-latest)	45s
checks / test (3.11, lowest-direct, windows-latest)	2m 32s
checks / test (3.12, locked, windows-latest)	3m 39s
checks / test (3.11, lowest-direct, ubuntu-latest)	59s
checks / test (3.13, lowest-direct, ubuntu-latest)	57s
checks / test (3.10, lowest-direct, ubuntu-latest)	54s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 0s
checks / test (3.11, locked, ubuntu-latest)	49s
checks / test (3.13, locked, windows-latest)	2m 33s
checks / test (3.13, lowest-direct, windows-latest)	3m 9s
checks / test (3.14, locked, ubuntu-latest)	2m 22s
checks / test (3.14, lowest-direct, windows-latest)	2m 47s
checks / test (3.14, locked, windows-latest)	3m 15s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 16s
all-green	5s
	40m 52s

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