Add [guts] logic into the oik-bbw/wp block

[bobbingwide]

Requirement

• replace the [guts] shortcode from oik-block with the eqiuvalent logic in a block

Proposed solution

• Enhance the oik-bbw/wp block to call the server logic for the guts shortcode when the attribute called g is set.
• No need to remove the code from the oik-block plugin, just don't activate oik-block.

Note: This is a QAD solution.
The original code uses text fields for the options to display version, PHP version and memory.
The new option to display Gutenberg information is also implemented as a string.

It's only really needed to assist problem determination, being performed immediately or in the future.

In a future version the attributes would be better implemented as toggles, with logic to convert the boolean variables to the attributes the shortcode functions expect.

[bobbingwide]

When tested as a standalone plugin ( on https://cwiccer.com) there were a couple of problems with functions not being found.