Detect/sanitize homoglyphs in Vizier names

[aimichelle]

Is your feature request related to a problem? Please describe.
Users can currently specify a name for their Vizier by passing in the cluster name at deploy time. For example px deploy --cluster_name=test.
Vizier names are unique across the control plane. So, if someone were to already have a cluster name of test, the cluster would be assigned a name of test_<random-hash>. This is all done here when a Vizier connects to the control plane: https://github.com/pixie-io/pixie/blob/main/src/cloud/vzmgr/controllers/server.go#L775

There's a possibility that someone could confuse another user by trying to deploy a cluster name using homoglyphs. For example: "cluster" vs "clυster". Users may mistakenly believe that "clυster" is cluster which they are looking for.

Describe the solution you'd like
When a user inputs a cluster name with homoglyphs, we should detect that and sanitize the name. For example, replacing υ with u.

Describe alternatives you've considered
Rather than sanitization, we could just choose to present the Vizier name differently in the UI so the characters are visually different.

[vihangm]

After some discussion, I think detection at input time and sanitizing is probably not the best solution since it doesn't address viziers that are already deployed.
Instead I think we should handle this similarly to how browsers handle various domain. We can piggyback on the IDNA/Punycode implementation and use the same encoding when rendering cluster names.