[lua] Update !getstats to partition reports

[MowFord]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

Per this thread, I've updated the !getstats command

It now collects all the messages to print into a table and spits them out at the end, to reduce duplicated code

Went through a lot of iterations, but suffice to say the help text shows up when you don't choose a proper stat group, and it still prints all the same data, as well as a whole new group of "elements" with resistance data as well as immunities.

Steps to test these changes

[MowFord]

rebased after enum changes

[MowFord]

switch:caseof works with a default block, neat

[TeoTwawki]

switch:caseof works with a default block, neat

whats even neater is this is probably the 1st time anyone has used it. which was why I stamped before hand lol.

[MowFord]

When cleaning up goes too far, sorry about that. Accidentally deleted the branch

[Frankie-hz]

Love this idea