Maintenance: change project name to "AWS Lambda Powertools for TypeScript"

[saragerion]

Description of the improvement

Summary of the proposal

Change project name being referenced from these versions:

• AWS Lambda Powertools (TypeScript)
• Lambda Powertools TypeScript
• AWS Lambda Powertools TypeScript

To this:
AWS Lambda Powertools for TypeScript

See related RFC for more information

How, where did you look for information

• Readme files (root folder, nested project folders)
• Mkdocs files in docs
• Code
• ...

We probably need to do a text search in the whole repo.

Missing or unclear documentation

Inconsistent naming convention, see related RFC.

Improvement

A consistent name throught the project.

Related existing documentation

N/A

Related issues, RFCs

aws-powertools/powertools-lambda#80

[github-actions]

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