Backport support for IDP Discovery protocol #3132

Job	Run time
Security checks	24s
Sanity checks	18s
Syntax and unit tests, PHP 7.2, ubuntu-latest	1m 10s
Syntax and unit tests, PHP 7.1, ubuntu-latest	1m 3s
Syntax and unit tests, PHP 7.3, ubuntu-latest	1m 1s
Syntax and unit tests, PHP 8.2, ubuntu-latest	1m 13s
Syntax and unit tests, PHP 8.0, ubuntu-latest	2m 56s
Syntax and unit tests, PHP 8.4, ubuntu-latest	1m 5s
Syntax and unit tests, PHP 7.3, windows-latest	2m 31s
Syntax and unit tests, PHP 8.2, windows-latest	4m 14s
Syntax and unit tests, PHP 7.1, windows-latest	3m 23s
Syntax and unit tests, PHP 7.4, ubuntu-latest	1m 7s
Syntax and unit tests, PHP 8.3, ubuntu-latest	1m 6s
Syntax and unit tests, PHP 7.2, windows-latest	2m 39s
Syntax and unit tests, PHP 8.1, ubuntu-latest	1m 18s
Syntax and unit tests, PHP 8.1, windows-latest	3m 57s
Syntax and unit tests, PHP 8.4, windows-latest	4m 23s
Syntax and unit tests, PHP 8.3, windows-latest	3m 56s
Syntax and unit tests, PHP 7.4, windows-latest	2m 28s
Syntax and unit tests, PHP 8.0, windows-latest	3m 33s
Quality control	0s
	43m 45s

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