feat(relax/frontend/torch): Add basic range constraint support

[demoncoder-crypto]

Addresses #17818

[mshr-h]

Please include test. @demoncoder-crypto
https://github.com/apache/tvm/blob/main/tests/python/relax/test_frontend_from_exported_program.py

[demoncoder-crypto]

done @mshr-h Please check if my implementation is up to expectation

[demoncoder-crypto]

Understood @mshr-h I will fix it.

[demoncoder-crypto]

@mshr-h I have made the changes requested by you

[mshr-h]

LGTM. Thanks for the update! Please fix the CI errors so that we can merge it. @demoncoder-crypto

[demoncoder-crypto]

Tried to fix the errors do let me know if it works now thanks @mshr-h

Edit - i also tried creating helper methods I don't know how to fix the lint error

[demoncoder-crypto]

I cannot fix the lint/pr-head its expecting less nesting which would require me to make a helper method should I proceed and make it? @mshr-h

[mshr-h]

Please remove the unnecessary comment.

[mshr-h]

@staticmethod would be better since it doesn't access the instance variable or method.

[mshr-h]

Adding helper functions is totally fine as long as it's readable and maintainable. @demoncoder-crypto

[mshr-h]

I think we need multiple testcases so that we can cover all the possible cases:

1. lower constraints only
2. upper constraints only
3. both the lower and upper constraints
4. the constraints are overridden by another constraints (this is already in the test)

[yongwww]

@demoncoder-crypto pls fix the conflicts and ci

[mshr-h]

Please fix the CI error and resolve the conflict.