* r1cs_parser

* z vector calculation

* test function done

* improved

* Brushuped

* add comment

* Added description of test_circuit

* found mistake

* fixed cargo.toml

* Imported ark-circom as crate

* improved l in R1CS as the number of public I/O

* separate test functions into success/failure and unify variable to pub_io_len

* removed bn254 & abstracted to PrimeField, but still some work

* add comments and clean up code

* move ark-bn254 in dev-dependencies

* abstracted test function

* fixed github action's error

* cargo fmt

* remove convert_constraints_bigint_to_scalar function

* fixed n_cols

* fixed n_cols

* Add functionality to compile Circom files in tests

* Remove test_circuit.r1cs

* Introduce CircomFrontend trait and simplify with CircomWrapper struct

* deleted the CircomFrontend

* improved

* fixed clippy lint checks of github actions

* probably fixed github actions error by changing the github yaml

* fixed github yaml, fmt, and clippy

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Co-authored-by: Carlos Pérez <37264926+CPerezz@users.noreply.github.com>