Bumping version number to 0.7.0

[sophialee0416]

Platforms Impacted

• [x] iOS
• [ ] macOS

Description of changes

• #1077
• #1059

Verification

Pod lib lint + making sure build runs

Pull request checklist

This PR has considered:

• [ ] Light and Dark appearances
• [ ] iOS supported versions (all major versions greater than or equal current target deployment version)
• [ ] VoiceOver and Keyboard Accessibility
• [ ] Internationalization and Right to Left layouts
• [ ] Different resolutions (1x, 2x, 3x)
• [ ] Size classes and window sizes (iPhone vs iPad, notched devices, multitasking, different window sizes, etc)
• [ ] iPad Pointer interaction
• [ ] SwiftUI consumption (validation or new demo scenarios needed)
• [ ] Objective-C exposure (provide it only if needed)

Microsoft Reviewers: Open in CodeFlow

[huwilkes]

What dictates how often we bump the version? I believe there was a very recent PR from @huwilkes bumping the version to 0.6.0

@laminesm For sure this week is a bit unusual. Normally we'll do a version bump every couple of weeks (which should maybe be every week), but in this case we're trying to only add breaking api changes on minor version changes. Which didn't go as planned, as you'll see with 0.6.1. But the idea with this one was that I would update to 0.6.0 to bring the Notification to main and our customers, then @sophialee0416 would update again to 0.7.0 to bring in the Table View Cell.