Replace the ark-zkey witness calculator with the one of iden3 (#273)

* Add files via upload

* Add files via upload

* Add files via upload

* Add files via upload

* Add files via upload

* Add files via upload

* Add files via upload

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Delete rln/resources/tree_height_20/rln.wasm

* Changes in accordance with the results of the first round of reviewing.

* Formatting

* Acknowledgements and a readme fix

* Minor change: Vec memory allocation

rln/Cargo.toml

@@ -42,6 +42,7 @@ color-eyre = "=0.6.2"
 thiserror = "=1.0.39"
 
 # utilities
+byteorder = "1.4.3"
 cfg-if = "=1.0"
 num-bigint = { version = "=0.4.3", default-features = false, features = [
     "rand",
@@ -51,11 +52,13 @@ once_cell = "=1.17.1"
 lazy_static = "=1.4.0"
 rand = "=0.8.5"
 rand_chacha = "=0.3.1"
+ruint = { version = "1.10.0", features = ["rand", "serde", "ark-ff-04", "num-bigint"] }
 tiny-keccak = { version = "=2.0.2", features = ["keccak"] }
 utils = { package = "zerokit_utils", version = "=0.5.1", path = "../utils/", default-features = false }
 
 
 # serialization
+prost = "0.13.1"
 serde_json = "=1.0.96"
 serde = { version = "=1.0.163", features = ["derive"] }