Feature/validator bulder

[Jerajo]

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Changes Proposed in this pull request:

• Implement a Validator bluider with fluent API capabilities.
• Add default validator messages in ValidatorMessages.resx.

PR Checklist

• [ ] Has tests (if omitted, state reason in description) For time reasons XP
• [X] Rebased on top of master at time of PR
• [X] Consolidate commits as makes sense