fix(echarts): align charting colors

[jul-lam]

💡 What is the current behavior?

Overview:

• echarts are not themed correctly
• visual regression tests are missing
• examples are missing
• stackblitz and preview are not working
• docu is wrong

Jira: IX-606, IX-854

🆕 What is the new behavior?

Overview:

• echarts themes have been corrected
• visual regression tests have been added
• examples have been added
• stackblitz and preview have been fixed
• docu has been adapted

Details:

• Modified the themes in ix-echarts.
• Incorporated visual regression tests into ix-echarts and updated pipelines.
• Altered the package logic of ix-echarts to use the window object echarts and removed the method call upon import.
• Introduced echarts examples for all frameworks.
• Adjusted code runtimes to accommodate echarts.
• Tweaked the code runtime logic to utilize the current theme, which is essential for echarts.
• Adapted the code runtime logic for HTML to include the necessary imports for echarts.
• Updated the documentation to accurately explain the installation process and showcase examples for all frameworks.
• Enhanced the open preview function to incorporate the theme and noMargin option, which are required for echarts.

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

• 🦮 Accessibility (a11y) features were implemented
• 🗺️ Internationalization (i18n) - no hard coded strings
• 📲 Responsiveness - components handle viewport changes and content overflow gracefully
• 📄 Documentation was reviewed/updated (pnpm run docs)
• 🧪 Unit tests were added/updated and pass (pnpm test)
• 📸 Visual regression tests were added/updated and pass (Guide)
• 🧐 Static code analysis passes (pnpm lint)
• 🏗️ Successful compilation (pnpm build, changes pushed)

👨‍💻 Help & support

[changeset-bot]

🦋 Changeset detected

Latest commit: 84100d7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@siemens/ix-echarts	Patch

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