Print more details in CLI regex-test

[DL6ER]

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• I have read and understood the contributors guide.
• I have checked that another pull request for this purpose does not exist.
• I have considered, and confirmed that this submission will be valuable to others.
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10

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Prints details about parsed Pi-hole regex extensions changing the effect of regular expressions.

Examples:

./pihole-FTL regex-test "f" 'f;querytype=AAAA'

[i] Compiling regex filter...
    Compiled regex filter in 0.646 msec

Checking domain...
    f;querytype=AAAA matches
    Hint: This regex matches only type AAAA queries   <-----------
   Time: 0.449 msec

./pihole-FTL regex-test "f" 'f;querytype=!TXT'

[i] Compiling regex filter...
    Compiled regex filter in 0.646 msec

Checking domain...
    f;querytype=!TXT matches
    Hint: This regex never matches type TXT queries   <-----------
   Time: 0.449 msec

./pihole-FTL regex-test "f" 'g;invert'

[i] Compiling regex filter...
    Compiled regex filter in 0.050 msec

Checking domain...
    g;invert matches
    Hint: This regex matches inverted   <-----------
   Time: 0.046 msec

./pihole-FTL regex-test "f" 'f;reply=NXDOMAIN'

[i] Compiling regex filter...
    Compiled regex filter in 0.030 msec

Checking domain...
    f;reply=NXDOMAIN matches
    Hint: This regex forces reply type NXDOMAIN   <-----------
   Time: 0.019 msec

[pralor-bot]

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

https://discourse.pi-hole.net/t/pi-hole-ftl-v5-14-web-v5-11-and-core-v5-9-released/53529/1