Add folder browser for image compression

[youkai95]

Closes #259 This feature is only working for the image compression tool. I know there is a refactorization of the component around, so I would like to leave the feature here for your consideration. Please, do not consider the UI desing... I am really bad with it.

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Internationalization and localization
• Other (please describe):

Issue Number: #259

What is the new behavior?

• You can choose a folder to optimize images inside it

Other information

I do not consider the UI design to be pretty. I am accepting any kind of fix/redesign/etc if this PR could be accepted.

Quality check

Before creating this PR, have you:

• Followed the code style guideline as described in CONTRIBUTING.md
• Verified that the change work in Release build configuration
• Checked all unit tests pass

[veler]

Hello,

Thank you for this contribution. :)
As you mentioned, I'm working on a reusable control for selecting files. Being able to select a browser is a great idea!
If that's OK, I will use part of what you did here in the control I'm making so it supports folders too.

Thank you again for this contribution and idea!

[youkai95]

Hello,

Thank you for this contribution. :) As you mentioned, I'm working on a reusable control for selecting files. Being able to select a browser is a great idea! If that's OK, I will use part of what you did here in the control I'm making so it supports folders too.

Thank you again for this contribution and idea!

No problem, I am grateful that this contribution helps somehow ;)

[veler]

@youkai95 , I just finished the component in question :-D You can take a look at it here if you want: #308