chore: Remove old frontend and all references #493

Job	Run time
General Pull Request Checks / Run Cargo Udeps	7m 29s
General Pull Request Checks / Run Cargo Tests	1m 20s
General Pull Request Checks / Run Cargo Deny (bans licenses sources)	47s
General Pull Request Checks / Run Cargo Deny (advisories)	44s
General Pull Request Checks / Run RustDoc	7m 28s
General Pull Request Checks / All tests passed	2s
Helm Chart Check	24s
Publish amd64 Image	15m 55s
Publish arm64 Image	14m 58s
Build and publish manifest list	45s
	49m 52s

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