Update package.json with keywords

[ganesh-bruno]

Description

This pull request updates the keywords field in the package.json of the bru-cli module. The added keywords reflect the core features and functionalities of the CLI tool.

Changes Made:

• Updated the keywords section in package.json to include more relevant terms like API, automation, http-client, etc.
• Ensured that the new keywords align with the project's focus on API testing, automation, and CLI functionalities.

Contribution Checklist:

• The pull request only addresses the addition of keywords.
• The pull request does not introduce any breaking changes.
• I have added the keywords in the package.json file under the correct section.
• I have read the contribution guidelines.

Keywords Added:

"keywords": [
  "API",
  "testing",
  "automation",
  "cli",
  "command-line",
  "bruno",
  "HTTP requests",
  "rest-api",
  "api-client",
  "api-automation",
  "request-handling",
  "mock-api",
  "http-client",
  "async",
  "promise",
  "javascript",
  "nodejs",
  "automation-tool",
  "postman-alternative",
  "api-scripting"
]