feat(rust/rbac-registration): private Cip0134UriSet

[Mr-Leshiy]

Description

Making Cip0134UriSet to not expose it for the public usage, as its an internal implementation detail of the rbac-registration library.

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• My code follows the style guidelines of this project
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• I have added tests that prove my fix is effective or that my feature works
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[github-actions]

📚 Docs Preview

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https://docs.dev.projectcatalyst.io/libs/feat/make-cip134uriset-private

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 566/566}$ | ${\color{red}Fail: 0/566}$ |

[stanislav-tkach]

Too late, but I don't like it. 🙃