Implement one of the unsupported SVG features: <text>, <image>...

[Lucas-C]

Context
Since v2.5.1, fpdf2 can embed SVG vector images: https://pyfpdf.github.io/fpdf2/SVG.html
However our current SVG parser has some limitations

Goal
Provide support for any of the currently unsupported SVG features (<text>, <marker>...)
Some unit tests should be added covering your implementation.

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By implementing this feature you, as a benevolent FLOSS developper, will provide access to the large community of fpdf2 users to a useful functionality.
As a contributor you will get review feedbacks from the maintainer & other contributors, and learn about the lifecycle & structure of a Python library on the way.
You will also be added to the contributors list & map.

This issue can count as part of hacktoberfest

[Lucas-C]

Support for SVG <image> tags was added in PR #919