[v2 mac] add fullscreen option to preference

[fkhadra]

Description

This PR adds the option to enable/disable fullscreen support on Mac. For example, when this option is enabled, it allows the user to display a video in fullscreen mode.

Fixes # 2099

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

I've created a new wails app that point to my changes. The app only render a video. When the user hover the video a fullscreen button is displayed allowing the user to switch in fullscreen mode.

wails-fs.mp4

Repository: https://github.com/fkhadra/wails-fix-2099

• Windows
• macOS
• Linux

Test Configuration

# Wails
Version | v2.6.0

# System
┌─────────────────────────┐
| OS           | MacOS    |
| Version      | 13.5.2   |
| ID           | 22G91    |
| Go Version   | go1.21.0 |
| Platform     | darwin   |
| Architecture | arm64    |
└─────────────────────────┘

# Dependencies
┌──────────────────────────────────────────────────────────────────┐
| Dependency                | Package Name | Status    | Version   |
| Xcode command line tools  | N/A          | Installed | 2397      |
| Nodejs                    | N/A          | Installed | 18.17.0   |
| npm                       | N/A          | Installed | 9.6.7     |
| *Xcode                    | N/A          | Available |           |
| *upx                      | N/A          | Installed | upx 4.1.0 |
| *nsis                     | N/A          | Available |           |
└──────────────────── * - Optional Dependency ─────────────────────┘

# Diagnosis
Optional package(s) installation details:
  - Xcode: Available at https://apps.apple.com/us/app/xcode/id497799835
  - nsis : More info at https://wails.io/docs/guides/windows-installer/

 SUCCESS  Your system is ready for Wails development!

 ♥   If Wails is useful to you or your company, please consider sponsoring the project:
https://github.com/sponsors/leaanthony

Checklist:

• I have updated website/src/pages/changelog.mdx with details of this PR
• My code follows the general coding style of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[mikeee]

Gofmt should clean these up for you

[fkhadra]

Actually, the indention on the IDE was ok but I was using space instead of tab, thanks for pointing out.

[leaanthony]

Thanks @fkhadra 🙏

[fkhadra]

You're welcome !