Rename class names and types to PascalCase

[musayann]

Objective

We want to rename all the class names, typescript types and enums used in the project to PascalCase

Acceptance Criteria

• Rename all class names, typescript types and enums used in the project to PascalCase
• Don't rename anything else. Functions, variables, constants and file names are out of scope for this ticket
• Make sure that the test run and nothing breaks