ApexDoc comment syntax validation

[SCWells72]

Provide optional validation of ApexDoc comments, specifically the following:

• Missing doc comment on a declaration that meets/exceeds the minimum configured minimum visibility. Needs to be able to ignore missing comments on:
  • Deprecated either via annotation or ApexDoc tag
  • Inherited from base declaration
  • Extends/overrides system Apex type/method
• Unresolvable reference
• Missing, incomplete, or extraneous @param tag(s)
• Missing, incomplete, or extraneous @return tag
• Missing @exception/@throws tag exception type name and/or description
• Missing @see tag reference and/or description
• Missing @author tag value
• Missing @group tag value
• Missing @date tag value
• Missing @since tag value
• Missing @example tag value
• Missing @deprecated tag description
• Missing custom object/field description text

It would need to be possible for the user to enable/disable this entirely as well as to determine which validation rules should be used.

[SCWells72]

Delivered in 1.0.0.3.