Add the following examples: [Large-Precision Comparison](https://github.com/openfheorg/openfhe-development/blob/main/src/binfhe/examples/eval-sign.cpp) [Small-Precison Arbitrary Function Evaluation](https://github.com/openfheorg/openfhe-development/blob/main/src/binfhe/examples/eval-function.cpp)
Add the following examples:
Large-Precision Comparison
Small-Precison Arbitrary Function Evaluation