Resolve "Convert Repository Charts to ECharts"

What does this MR do?

This MR migrates the charts on in the Repository Charts area (https://gitlab.com/gitlab-org/gitlab/-/graphs/master/charts) to ECharts. It also replaces the pie chart on the top of the page with a regular bar/column chart.

Note: There's opportunity to refactor this page into a single Vue application (currently we have a lot of HAML code which is not really necessary) Also, from a UX perspective, there's room for improvement. There are separate issues to keep track of those improvements, see #202217 and #202204

Screenshots

Before	After

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

Closes #196182 (closed)