WIP: allow certain recursive axioms

[ana-pantilie]

Allow axioms of the form:

   rule X <=Int Y => X ==Int Y
      requires Y <=Int X
      [simplification]

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Review checklist

The author performs the actions on the checklist. The reviewer evaluates the work and checks the boxes as they are completed.

• Summary. Write a summary of the changes. Explain what you did to fix the issue, and why you did it. Present the changes in a logical order. Instead of writing a summary in the pull request, you may push a clean Git history.
• Documentation. Write documentation for new functions. Update documentation for functions that changed, or complete documentation where it is missing.
• Tests. Write unit tests for every change. Write the unit tests that were missing before the changes. Include any examples from the reported issue as integration tests.
• Clean up. The changes are already clean. Clean up anything near the changes that you noticed while working. This does not mean only spatially near the changes, but logically near: any code that interacts with the changes!

[github-actions]

name	diff_allocated_bytes	diff_max_live_bytes
test/regression-evm/test-lemmas.sh	-0.000031	0.000029
test/regression-evm/test-flipper-addu48u48-fail-rough.sh	-0.000002	-0.000007
test/regression-evm/test-storagevar03.sh	-0.000002	0.000083
test/regression-evm/test-functional.sh	-0.000008	0
test/regression-evm/test-dsvalue-peek-pass-rough.sh	-0.000000	-0.000640
test/regression-evm/test-totalSupply.sh	0.000006	-0.000029
test/regression-evm/test-sum-to-n.sh	0.000001	0
test/regression-wasm/test-memory.sh	-0.014884	0
test/regression-wasm/test-loops.sh	0.028663	-0.000041
test/regression-wasm/test-simple-arithmetic.sh	0.008559	0.000059
test/regression-wasm/test-locals.sh	-0.000016	0
test/regression-wasm/test-wrc20.sh	-0.078049	0