Better organize the structure of projects by category of use

[kfrural]

Description
Currently, examples are organized generically. Proposal:

Group by application type
Create categories by difficulty level
Add descriptive metadata
Proposed Structure
By Type:
Web APIs
Desktop Applications
Microservices
By Level:
Basic
Intermediate
Advanced
By Technology:
SQL Server
Azure SQL
Synapse
Benefits
Greater navigation ease
Better organization of resources
Easier finding of specific examples