[Projects] Add Get Project By ID Route (GET /projects/{id})

[nourshoreibah]

User Story

As a user I want to view details for a single project so that I can see its funding and related data.

Description

• Add the GET route with path parameter.
  Command:
  node tools/lambda-cli.js add-route projects GET /projects/{id}
• Query projects table using projectID.
• Return 404 if no matching record found.

Acceptance Criteria

• Returns 200 with full project record.
• Returns 404 if project not found.