feat: add 'Currently working here' option for experience end date and fix contact links protocol

[asyrofuddien]

Changes

• Experience end date: Added a "Currently working here" checkbox below the end date field. When checked, the end date displays as "Present" in the resume (e.g., "Feb 2026 - Present").
• Contact links: Added `ensureProtocol` helper to automatically prepend `https://` to URLs (LinkedIn, GitHub, Blogs, Twitter, Portfolio) that are missing a protocol, preventing them from being treated as local file paths.

Files changed

• `components/UI/Input.js` — New `month-current` input type with checkbox
• `config/ResumeFields.js` — Changed experience end date type to `month-current`
• `utils/formatDate.js` — Handle `"Present"` string
• `components/Resume/pdf/index.js` — Add `ensureProtocol` to contact links
• `components/Resume/html/index.js` — Add `ensureProtocol` to contact links"

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