Bring back deprecated rules

Historically PSScriptAnalyzer has had a number of rules that have been deprecated & then removed from the available set of rules, one such example is AvoidUninitializedVariables

I propose that we bring them back, but publish them contained in a separate module so that others could still use them if they choose to do so.

This realistically shouldn't equate for much additional engineering work & would provide a better mechanism for rule development & deprecation in future whilst not loosing potentially useful rules in specific cases.

该提案旨在通过单独的模块恢复已弃用的 PSScriptAnalyzer 规则，包括 AvoidUninitializedVariables。首先定位现有或已移除的规则实现以及模块结构；当已弃用的规则被单独发布，并且无需更改可用的默认规则集即可继续使用时，即视为完成。