[FEATURE] Add PPL support to Mathematical and Trigonometric functions missing from new V2 engine

[matthewryanwells]

Missing Functions from V2 engine

Syntax from https://opensearch.org/docs/latest/search-plugins/sql/functions/.

Missing:

• cosh
• sinh
• add
• subtract
• multiply
• divide
• expm1
• rint
• signum
• pow & power

Related to:
#1190