New code generation

[BeMySlaveDarlin]

Hello!

• Type: code quality
• Link to issue: #1455

In raising this pull request, I confirm the following (please check boxes):

• [x] I have read and understood the Contributing Guidelines
• [x] I have checked that another pull request for this purpose does not exist
• [x] I wrote some tests for this PR

Small description of change: Migrated the way of classes generation to nette/php-generator implementation.

• [x] Controllers
• [x] Models
• [x] Scaffold
• [x] Webtools
• [x] Projects (Cli, Micro, Simple, Modules)

Added Tasks generation task: (alias of: create-task)

Thanks

[codecov[bot]]

Codecov Report

Merging #1520 (3373cfe) into 4.3.x (374f99d) will increase coverage by 4.63%. The diff coverage is 20.74%.

@@           Coverage Diff            @@
##           4.3.x   #1520      +/-   ##
========================================
+ Coverage   3.29%   7.93%   +4.63%     
========================================
  Files        111     122      +11     
  Lines       5101    5662     +561     
========================================
+ Hits         168     449     +281     
- Misses      4933    5213     +280