FEAT: form to create new tool entries

[jkowalleck]

a first review gave me the impression that huge parts of the PR are mere copy/paste. Some details dont make sense, based on the tools' homepage/repo/description

[...] it isn't straighforward to create a tools entry by hand. If there was a tool/form to create a tool entry that might make it easier and it could also provide some basic validation to ensure there is consistency of the data.

Originally posted by @anthonyharrison in #62 (comment)

[jkowalleck]

tool-center/README.md

Line 5 in f15670b

As of March 2025, the CycloneDX Tool Center leverages a JSON Schema in which `tools.json` must validate against. [View the human-readable documentation for the JSON Schema](https://cyclonedx.github.io/tool-center/).

rendered docs: https://cyclonedx.github.io/tool-center/