Refactor and enhance services, security, and AI integration

[samuelzedec]

Changes Introduced

This pull request includes the following updates:

1. Refactoring and Naming Improvements:

   • Simplified test class names by aligning with updated service/feature naming conventions.
   • Removed unnecessary dependencies from LocalImageStorageService.

2. Password Validation:

   • Enhanced validation rules for passwords during company and user creation.

3. Amazon S3 Service Integration:

   • Added AmazonS3Service for robust image storage in AWS S3.
   • Improved error handling using standardized error messages.

4. Namespace and Dependency Injection Refactoring:

   • Updated namespaces for clarity, improving service and domain alignment.
   • Conditional registration of local vs AWS services based on the environment.

5. Semantic Kernel Features:

   • Integrated Semantic Kernel packages for leveraging AI capabilities.
   • Enabled PostgreSQL pgvector extension to facilitate semantic search.

6. Documentation and Configuration Updates:

   • Enhanced .gitignore for better storage folder management.
   • Updated appsettings.json