refactor: change code structure; update code conventions

[mglotov]

PR Description

• Refactored code structure
• Renamed terraform modules
• Updated code conventions
• Deleted tfsec checks in the layer2-k8s

Fixes #284

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Checklist

• My code follows the style guidelines 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

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication