ConditionSet, ImageSet: Implement formal Set comprehension

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In order to be able to express solution sets from SymPy's solveset a set comprehension constructor as equivalent to SymPy's imageset / ConditionSet is needed. As the arguments are symbolic the most natural way to do this would be a formal symbolic function named like set_of_all taking a term argument and a list argument containing element_of(...) function expressions.

This set would convert to a SymPy ImageSet or ConditionSet

Related: ImageManifoldSubset (#31653)

Depends on #24171
Depends on #32013
Depends on #32089
Depends on #32121

CC: @tscrim @mantepse

Component: symbolics

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/24176

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Dependencies: #24171

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Changed dependencies from #24171 to #24171, pynac-0.7.13

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comment:2

Accepting lists requires the function being a GinacFunction.

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Branch: u/rws/implement_formal_set_comprehension

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Commit: 9c77312

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Changed dependencies from #24171, pynac-0.7.13 to #24171, #24262

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New commits:

669ea22	24171: Formal set membership function
34c9773	24171: make RealSet inherit from Set_generic
af82717	24171: remove RealSet import; SR set coercion doctests
592ce87	24171: Py3 fixes
82b7c6f	Merge branch 'u/rws/formal_set_membership_function' of git://trac.sagemath.org/sage into t/24176/implement_formal_set_comprehension
ae29895	24176: check set argument of element_of()
9c77312	24176: Implement formal Set comprehension

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Changed branch from u/rws/implement_formal_set_comprehension to u/rws/24176

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Changed branch from u/rws/24176 to u/rws/implement_formal_set_comprehension

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Changed dependencies from #24171, #24262 to #24171, #24329

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Author: Ralf Stephan