Improve Code Style and Config, Plus Minor Refactoring

[monkey0722]

This pull request includes several changes to improve code quality and maintainability, particularly focusing on code style consistency and configuration updates. The most important changes include updates to the eslint configuration, modifications to the package.json file, and minor code refactoring in the bellmanFordSearch.ts file.

Code Style Consistency:

• eslint.config.js: Updated the syntax to use single quotes instead of double quotes for consistency.

Configuration Updates:

• package.json: Added a description to the project and updated the prettier script to include .js files.
• package.json: Moved typescript from dependencies to devDependencies.
• package.json: Modified the jest transform configuration to include tsconfig.json.

Code Refactoring:

• bellmanFordSearch.ts: Removed redundant comments and improved code readability by directly initializing distances.