AC0014: Make allowed ToolTip ending punctuation configurable

[MODUSCarstenScholling]

The current implementation of AC0014 hardcodes a trailing dot as the only accepted ToolTip ending. Some teams use different punctuation conventions (e.g. exclamation marks in specific locales or house styles).

Changes:

• The rule is renamed from ToolTip must end with a dot to ToolTip must end with a punctuation.
• A new ToolTipAllowedPunctuations setting in alcops.json accepts an array of { Character, Name } objects that define which punctuation characters are accepted.
• Default behavior is unchanged: when the setting is absent, a trailing dot is required.
• The diagnostic message now includes the configured punctuation names so users receive actionable feedback.

Example configuration:

{
  "ToolTipAllowedPunctuations": [
    { "Character": ".", "Name": "dot" },
    { "Character": "!", "Name": "exclamation mark" }
  ]
}

I will provide a PR for this change.