Add SVCB and HTTPS types

[DL6ER]

By submitting this pull request, I confirm the following:

• I have read and understood the contributors guide, as well as this entire template.
• I have made only one major change in my proposed changes.
• I have commented my proposed changes within the code.
• I have tested my proposed changes, and have included unit tests where possible.
• I am willing to help maintain this change if there are issues with it later.
• I give this submission freely and claim no ownership.
• It is compatible with the EUPL 1.2 license
• I have squashed any insignificant commits. (git rebase)

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What does this PR aim to accomplish?:

Add SVCB and HTTPS types and reduce code duplication slightly

How does this PR accomplish the above?:

This is the frontend PR corresponding to pi-hole/FTL#1010
This PR works without the FTL changes, however, it also doesn't do anything without them.
(this also means it can be merged independently of the FTL PR).

What documentation changes (if any) are needed to support this PR?:

None

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/other-query-to-list-as-svcb-https-type/41022/5