[Rule Submit] META: Measure names should not have '_' '/' '\\'

[Gezahegne]

"ID": "META:_MEASURE_NAMES_SHOULDN'T_HAVE_'_'_'/'_'\\'",
"Name": "META: Measure names should not have '_' '/' '\\'",
"Category": null,
"Description": "META: Measure names should not have '_' '/' '\\'",
"Severity": 2,
"Scope": "Measure",
"ScopeString": "Measures",
"Expression": "Name.Contains(\"_\") or Name.Contains(\"\\\") or Name.Contains(\"/\") and not IsHidden",
"FixExpression": null,
"Compatibility": null,
"IsValid": false

[otykier]

Won't add, as this is organization-specific naming convention.