Restructure the main menu into a hierarchical presentation

[veler]

Is your feature request related to a problem? Please describe.
The following is quite redundant:

Describe the solution you'd like
Perhaps we should make a hierarchical menu. For example

• Encoder / Decoder
  | - Base 64
  | - HTML
  | - URL
  ...etc

[Arlodotexe]

To keep room for future tools and possibly specialized ones, I'm thinking something like:

Cryptography
- Encode / Decode
   - Base 64
   - HTML
   - URL
   - JWT Decode
- Hash generator

Data
- UUID Generator
- Json <> Yaml

Text
- Formatters
   - JSON Formatter
- Regex Tester
- Markdown preview
- String Utilities (Possibly rename?)
- Text Diff

Media
- Image compressor

Having a full-page view (similar to Windows 10 settings app) would also be nice, selecting from a grid is faster than thumbing through a list.

[veler]

Thank you very much @Arlodotexe for this suggestion. I like that a lot, along with the idea of a full page view.

[sylveon]

Encoding has nothing to do with cryptography. It will be hard for most users to find these if they are nested under cryptography.

[veler]

What about this:

Converters
 - JSON to Class (upcoming tool)
 - JSON <> YAML
 - Number Base
 - SVG to XAML (upcoming tool)

Encoder / Decoders
 - HTML
 - URL
 - Base64
 - JWT Decoder

Formatters
 - JSON
 - XML (upcoming tool)

Generators
 - Hash
 - UUID
 - Lorem Ipsum (upcoming tool)

Text
 - String Utilities (to be renamed)
 - Regex Tester
 - Text Diff
 - Duplicated Code Checker (upcoming tool)
 - Markdown Preview

Graphic
 - PNG / JPEG Compressor
 - Color Picker (upcoming tool)
 - Color contrast checker (upcoming tool)

[Arlodotexe]

@veler Looks good to me!