feat(uniffi): merging issue and prover

Merging a lot of work done by me and Ahmed Moussa
Picking the awesome and the awesome in just one repo.
This includes:

Full issuer functionality and models.
Prover issuing functionality and models.
Error types.
Build scripts for swift.
And output swift xcframework for all macos and ios archs

Author: goncalo-frade-iohk

uniffi/build-release-apple-universal.sh

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+#!/bin/bash -e
+
+echo "Verify and install required targets"
+targets=(
+  "x86_64-apple-ios"
+  "aarch64-apple-ios"
+  "aarch64-apple-ios-sim"
+  "aarch64-apple-darwin"
+  "x86_64-apple-darwin"
+)
+
+for target in "${targets[@]}"; do
+  if ! rustup target list | grep -q "$target (installed)"; then
+    echo "Target $target is not installed. Installing..."
+    rustup target add "$target"
+    echo "Target $target installed."
+  else
+    echo "Target $target is already installed."
+  fi
+done
+
+# Create output directories
+mkdir -p ./target/universal-ios-sim/release || true
+mkdir -p ./target/universal-darwin/release || true
+
+# Generate Uniffi bindings
+echo "Creating uniffi bindings"
+uniffi-bindgen generate src/anoncreds.udl --language swift -o ./wrappers/swift/anoncreds
+
+# Build targets
+echo "Build all targets"
+for target in "${targets[@]}"; do
+  echo "Starting $target build"
+  cargo build --release --target "$target"
+  echo "Finished $target build"
+done
+
+# Remove existing files in the destination directories
+rm -f ./target/universal-ios-sim/release/libanoncreds_uniffi.a || true
+rm -f ./target/universal-darwin/release/libanoncreds_uniffi.a || true
+rm -dr ./target/universal/libanoncreds.xcframework || true
+
+# Create universal libraries
+echo "Creating lipo universal libraries"
+lipo -create ./target/aarch64-apple-ios-sim/release/libanoncreds_uniffi.a ./target/x86_64-apple-ios/release/libanoncreds_uniffi.a -output ./target/universal-ios-sim/release/libanoncreds_uniffi.a
+
+lipo -create ./target/aarch64-apple-darwin/release/libanoncreds_uniffi.a ./target/x86_64-apple-darwin/release/libanoncreds_uniffi.a -output ./target/universal-darwin/release/libanoncreds_uniffi.a
+
+# Create XCFramework
+echo "Creating xcframework"
+xcodebuild -create-xcframework \
+  -library ./target/aarch64-apple-ios/release/libanoncreds_uniffi.a \
+  -headers ./wrappers/swift/anoncreds/ \
+  -library ./target/universal-ios-sim/release/libanoncreds_uniffi.a \
+  -headers ./wrappers/swift/anoncreds/ \
+  -library ./target/universal-darwin/release/libanoncreds_uniffi.a \
+  -headers ./wrappers/swift/anoncreds/ \
+  -output ./target/universal/libanoncreds.xcframework
+
+echo "Removing .swift files from headers"
+dir="./target/universal/libanoncreds.xcframework"
+
+# Compress and copy XCFramework
+target_dir_name="libanoncreds.xcframework"
+source_dir="./target/universal/"
+dest_dir="./output-frameworks/anoncreds-swift"
+zip_name="libanoncreds.xcframework.zip"
+
+echo "Zip xcframework"
+rm -f "$dest_dir/$zip_name" || true
+zip -r "$dest_dir/$zip_name" "$source_dir/$target_dir_name"
+
+echo "Copy .swift binders"
+rm -f "./output-frameworks/anoncreds-swift/AnoncredsSwift/Sources/Swift/anoncreds.swift" || true
+mv "./wrappers/swift/anoncreds/anoncreds.swift" "./output-frameworks/anoncreds-swift/AnoncredsSwift/Sources/Swift/anoncreds.swift"
+
+rm -f "/wrappers/swift/anoncreds/anoncreds.swift" || true
+

uniffi/output-frameworks/anoncreds-swift/AnoncredsSwift/Sources/C/bridge.m

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+//
+//  bridge.c
+//  
+//
+//  Created by Goncalo Frade IOHK on 30/11/2022.
+//
+
+#include "bridge.h"
+
+void __dummy() {}

uniffi/output-frameworks/anoncreds-swift/AnoncredsSwift/Sources/C/include/bridge.h

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+//
+//  Header.h
+//  
+//
+//  Created by Goncalo Frade IOHK on 30/11/2022.
+//
+
+#ifndef Header_h
+#define Header_h
+
+#include "anoncredsFFI.h"
+
+#endif /* Header_h */