Investigate and Solve Lambda CLI Bugs

[nourshoreibah]

User Story

As a BRANCH dev, I want to use lambda CLI without it bugging

Description

The Lambda CLI path logic has some potential problems. Bugs to investigate:

1. Off by 1 error with params logic
2. Getting a blank string for normalized path
   Look into these bugs, confirm they exist, and fix them

Acceptance Criteria

• Create fresh test lambdas with lambda CLI
• try to recreate each bug
• Once you understand the bug, fix the code gen logic in lambda cli
• Thoroughly test your updates to lamdba CLI
  Bonus: How can we make lambda CLIs design more modular/usable? Big chunks of strings in JS may not be the best approach