Feat: Add OctalNotationFixer for explicit octal notation using 0o in … #800

Job	Run time
Code style and static analysis	32s
PHP 8.0	29s
Markdown link check	14s
PHP 8.1	33s
PHP 8.2	40s
PHP 8.3	32s
PHP 8.0 --prefer-lowest --prefer-stable	39s
tests-finished	4s
	3m 43s

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