AvoidAlias: deprecate this rule

[rismoney]

This rule is detrimental to the powershell community as it undermines
foundational idiomatic syntax that enables powershell to be extremely
powerful with simplicity in mind.

It hinders growth in many projects and forces unnecessary
verbosity around widely used simplistic cmdlets.

Microsoft has provided over 150 built-in aliases that are part of the
standard language and their usage should be allowed. If the problem
is conflicts with aliases then they should be worked out in the
powershell project and not here.

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[msftclas]

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[rismoney]

This is going to require additional work, as I see some other tests reference this, including globalsupression.

[bergmeister]

First of all: Thank you for your efforts and initiative! I appreciate that.
But as per my comment in the referenced issue #214 this needs to be discussed and approved first before this PR can continue because I think this might not be the right direction to go for PSScriptAnalyzer.

[JamesWTruher]

Please feel free to reopen if you choose (or create a new PR). With no activity in the last 6 months or so, this has gone a bit stale.