Add DNS message parsing operation

[hunts]

This is useful for debugging DNS related issues when the input is a wireformat binary of a DNS message.

Example:

• Input: q80BAAABAAAAAAAAA3d3dwdleGFtcGxlA2NvbQAAAQAB
• Operations: From Base64 -> Parse DNS Message
• Output:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43981
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.example.com.		IN	A

[CLAassistant]

All committers have signed the CLA.

[hunts]

This should cover decoding part of #940.

[hunts]

The UI Tests failure looks like unrelated to my changes?

[a3957273]

Hey @hunts, would you be able to resolve the conflicts with main? That should fix your test issues as well.

[hunts]

Hey @hunts, would you be able to resolve the conflicts with main? That should fix your test issues as well.

Rebased. But looks like there is still an unrelated UI test failure, same with main branch.