Add comprehensive documentation for terminal-ui

- Introduced new documentation files: `Components.md`, `Examples.md`, `Home.md`, `Install.md`, and `index.md`.
- Provided detailed guides on usage, examples, installation, and API components.
- Linked GitHub Pages and repository resources for easy navigation.

docs/Home.md

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+# terminal-ui
+
+Java library for building terminal UIs: tables, rules, colors, prompts, menus, SelectList, pager, and more. Fluent API, ANSI support, testable.
+
+## Quick links
+
+- **[Install](Install)** – Gradle / Maven dependency
+- **[Components](Components)** – What's in the library
+- **[Examples](Examples)** – Code snippets
+
+## Requirements
+
+- Java 21
+- Gradle 9.x or Maven (wrapper included in repo)
+
+## Build from source
+
+```bash
+./gradlew build
+./gradlew test
+```
+
+## License
+
+MIT – see [LICENSE](https://github.com/jakubbbdev/terminal-ui/blob/master/LICENSE) in the repo.