Implement RIGHT and LEFT keys for cursor navigation in terminal

[lukasondrejka]

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Description

Fixes #628

Added functionality for cursor navigation using the LEFT and RIGHT arrow keys.

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• [X] My code follows the style guidelines of this project
• [X] I ran ESLint and other linters for modified files
• [X] I have performed a self-review of my own code and tested it
• [X] I have commented my code, particularly in hard-to-understand areas (including JSDoc for methods)
• [X] My changes generate no new warnings
• [ ] My code needed automated testing. I have added them (this is optional task)

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