add force option to generate that will call purge before generating, …

[csmith608]

…still need to check edgecases

Related Issue(s)	nasa/fprime#2887
Has Unit Tests (y/n)	n
Documentation Included (y/n)	n

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Change Description

Implements force generate the runs a purge

Rationale

QoL

Testing/Review Recommendations

fprime-util generate --force

Future Work

[csmith608]

@LeStarch

[csmith608]

@thomas-bc

[LeStarch]

What happens when you purge -f then generate -f. That will purge a second time, does that error?

Otherwise this looks great!

[csmith608]

@LeStarch that's fine because the generate -f goes through all the purge logic so it realized those directories don't exist.

This is the result from generate -f

[INFO] Purge build directory at: /Users/crsmith/Documents/fprime/Ref/build-fprime-automatic-native
[INFO] Purge build directory at: /Users/crsmith/Documents/fprime/Ref/build-fprime-automatic-native-ut
[INFO] Skipping purge. The following directory does not exist: /Users/crsmith/Documents/fprime/Ref/build-fprime-automatic-native-ut

[thomas-bc]

One suggestion