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.

此提案旨在透過獨立模組還原已棄用的 PSScriptAnalyzer 規則，包括 AvoidUninitializedVariables。首先定位現有或已移除的規則實作以及模組結構；當已棄用的規則獨立發布，且無需變更可用的預設規則集即可繼續使用時，即表示完成。