feat: add a new webgl polar chart operator

[anishshiva7]

What changes were proposed in this PR?

This change introduces a WebGL Polar Chart operator, which visualizes data using polar coordinates rendered with GPU-accelerated WebGL. The WebGL Polar Chart operator enables high-performance and interactive visualization of datasets that are naturally expressed in angular and radial dimensions.
In a WebGL polar chart:

• The angular axis represents categories or continuous angular values.
• The radial axis represents magnitude or distance from the center.
• Data points are rendered using WebGL for efficient GPU-based visualization.
• The visualization supports smooth rendering of larger datasets compared to traditional DOM/SVG approaches.

This visualization is useful for:

• Displaying cyclic or directional data.
• Comparing magnitudes across angular segments.
• Identifying patterns in periodic datasets.
• Enabling efficient, interactive visual analytics workflows.

The operator has been integrated into the Texera workflow system and appears under the visualization category.

Any related issues, documentation, discussions?

Needs python library scikit-image
Can be installed using: pip install scikit-image

How was this PR tested?

Tested with existing test cases

Was this PR authored or co-authored using generative AI tooling?

No

[Ma77Ball]

Overall, it looks good. Please look over the comments and address/respond to them above.