[DOCS] Add more contribution guidelines #2656

Job	Run time
Check architecture	24s
Coding Standards	18s
xml-lint	13s
Code Coverage / Code Coverage	3m 38s
Lint root / Lint yaml & Composer (8.2)	6s
Static analysis / Static Code Analysis (8.2)	34s
Unit test / Supported Versions Matrix	4s
Unit test / Tests (8.1, lowest)	59s
Unit test / Tests (8.1, locked)	17s
Unit test / Tests (8.1, highest)	54s
Unit test / Tests (8.2, lowest)	27s
Unit test / Tests (8.2, locked)	12s
Unit test / Tests (8.2, highest)	27s
Unit test / Tests (8.3, lowest)	24s
Unit test / Tests (8.3, locked)	17s
Unit test / Tests (8.3, highest)	24s
Functional test / Supported Versions Matrix	6s
integration test / Supported Versions Matrix	6s
Functional test / Tests (8.1, lowest)	47s
Functional test / Tests (8.1, locked)	23s
Functional test / Tests (8.1, highest)	1m 5s
Functional test / Tests (8.2, lowest)	1m 2s
Functional test / Tests (8.2, locked)	29s
Functional test / Tests (8.2, highest)	1m 5s
Functional test / Tests (8.3, lowest)	38s
Functional test / Tests (8.3, locked)	27s
Functional test / Tests (8.3, highest)	1m 5s
integration test / Tests (8.1, lowest)	1m 3s
integration test / Tests (8.1, locked)	38s
integration test / Tests (8.1, highest)	58s
integration test / Tests (8.2, lowest)	1m 3s
integration test / Tests (8.2, locked)	46s
integration test / Tests (8.2, highest)	1m 0s
integration test / Tests (8.3, lowest)	1m 30s
integration test / Tests (8.3, locked)	46s
integration test / Tests (8.3, highest)	57s
	25m 32s

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