Add parameter parsing function to parse raw parameters

[AlexAxthelm]

The current process in workflow.pacta (and repeated in workflow.pacta.report, and hopefully to be implemented differently in workflow.pacta.webapp) is to check the raw input parameters against a raw_params JSON schema which checks that either the full schema is valid, or it contains the required fields and an "inherit" key to allow for the inheritence machinery from parse_params().

https://github.com/RMI-PACTA/workflow.pacta/blob/b7ce70fb0c9160e95e1312cd9c8354cd846e0e05/R/run_pacta.R#L29-L60

This should introduce a function that wraps this full process correctly, so it can be consistently re-used in other packages.

Supports RMI-PACTA/workflow.pacta#77

AB#11554