20240422 more fuzz facilities

[prozacchiwawa]

• Adds an object, ComplexAssignExpression, which can generate randomly structured, complex assign forms and report information about them. It also contains a method that allows it, given randomness, to produce valid defining expressions for each binding.
• Adds a simple method for compiling and running cl23 code and returns useful information about it such as the CompilerOpts used to compile it and the result of compilation. This will be used later for a property test rig that depends on other fuzz infrastructure.

[coveralls]

Pull Request Test Coverage Report for Build 8788458617

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 15 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.08%) to 82.935%

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Files with Coverage Reduction	New Missed Lines	%
src/compiler/sexp.rs	15	79.08%

Totals
Change from base Build 8761341174:	-0.08%
Covered Lines:	14925
Relevant Lines:	17996

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💛 - Coveralls