Tests for each backend and interpreter

[Maokami]

• [x] Add T2 programs and expected result
• [x] Test each backend SEAL and OpenFHE
• [x] Test T2 interpreter

[Maokami]

T2 tests (Pass/Total)

Basic Tests (HE backends, Interp) (11/11)

• [x] add_mult.t2
• [x] add_mult_fp.t2
• [x] arithmetic.t2
• [x] arrays.t2
• [x] batching.t2
• [x] ckks_test.t2
• [x] const_ops.t2
• [x] rotate.t2
• [x] rotate2.t2
• [x] rotate_ckks.t2
• [x] rotate_ckks2.t2

Advanced Tests (only HE backends)

Arithmetic (3/4)

• [ ] ~cmp.t2~ (The parameters used in T2 testing are not supported batching encoding: this cannot be handled in the OpenFHE backend, and additional implementation is required to handle it in the SEAL backend.)
• [ ] comp.t2 (Only helib testing execution could be found.)
• [x] eq.t2
• [x] lt_test.t2
• [x] ternary.t2

  Binary (16/17)

• [x] add_mult.t2
• [x] arrays.t2
• [x] batching.t2
• [x] bin_add_test.t2
• [x] bin_mul_test.t2
• [x] bin_sub_test.t2
• [x] bin_test.t2
• [x] bitwise.t2
• [ ] ~cmp.t2~ (The parameters used in T2 testing are not supported batching encoding: this cannot be handled in the OpenFHE backend, and additional implementation is required to handle it in the SEAL backend.)
• [x] comp.t2
• [ ] conditions.t2 (No testing execution could be found.)
• [x] eq.t2
• [x] leq_bin_test.t2
• [x] lt_bin_test.t2
• [x] not.t2
• [x] rotate.t2
• [x] shift.t2
• [x] ternary.t2