Finalize user documentation

[msanyoto]

User story

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As a user, I would like to have a user documentation, so that I can understand better how the program works from the user perspective.

Acceptance Criteria

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• There should be product vision section
• There should be product mission section
• (optional ) There should be usage section
• need to be added in the GitHub Wiki
• see https://github.com/amosproj/amos2023ws06-sales-lead-qualifier/wiki for reference
• a pdf file and md file should be created and the pdf file needs to be uploaded in the sprint-12/user-documentation.pdf
• The documentation should contain latest version changes of the application (17.07.2024)

DoD General Criteria

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• Feature has been merged into the main branch
• Feature has been added to the documentation
• Product owner approved features
• Developers agreed to release