Fix keywords.robot syntax errors and add test writing guide

[Copilot]

Fixed structural issues in resources/keywords.robot that prevented proper test execution, and added comprehensive test authoring documentation.

Fixes in resources/keywords.robot

• Removed duplicate *** Keywords *** header - Only one keywords section per file is valid
• Added missing imports - JSONLibrary for data-driven tests and GitHubPage.robot for page keywords

Before:

*** Settings ***
Library    SeleniumLibrary
Resource   locators.robot

*** Keywords ***
Perform Login To GitHub
    ...

*** Keywords ***  # ← Duplicate section caused syntax error
Run Login Test
    Go To GitHub Home Page  # ← Missing import

After:

*** Settings ***
Library    SeleniumLibrary
Library    JSONLibrary
Resource   locators.robot
Resource   ../pages/GitHubPage.robot

*** Keywords ***
Perform Login To GitHub
    ...

Run Login Test
    Go To GitHub Home Page

New Documentation: WRITING_TESTS.md

Comprehensive guide covering:

• Page Object Model architecture and project structure
• Step-by-step test creation workflow
• Best practices (naming, imports, teardowns, avoiding duplicates)
• Common patterns (data-driven testing, wait keywords, browser management)
• Troubleshooting reference for typical issues
• Quick reference tables for keywords and locators

Updated README.md to link to the new guide.

Original prompt

fix some of the tests and add a short guide of how to write tests

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[Copilot]

Pull Request Overview

This PR adds comprehensive test writing documentation and fixes a duplicate *** Keywords *** section in the keywords.robot file.

• Adds a complete WRITING_TESTS.md guide covering test architecture, best practices, and troubleshooting
• Removes duplicate *** Keywords *** header from resources/keywords.robot
• Adds library and resource imports needed for existing functionality (JSONLibrary and GitHubPage.robot)

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
resources/keywords.robot	Fixed duplicate Keywords section, added JSONLibrary and GitHubPage.robot imports to support existing JSON-based test functionality
WRITING_TESTS.md	New comprehensive documentation guide for writing Robot Framework tests with examples, best practices, and troubleshooting tips
README.md	Added reference to the new WRITING_TESTS.md documentation

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