refactor: remove rust project

Removes rust directory containing the pubky library.
Updates build scripts to include local and remote options.
Updates README.md.
Adds simple-git as a dev dependency.

setup-local-ios-bindings.js

@@ -0,0 +1,49 @@
+const fs = require('fs').promises;
+const path = require('path');
+
+const frameworkPath = 'rust/bindings/ios/PubkyMobile.xcframework';
+const frameworkDestinationPath = 'ios/Frameworks';
+const swiftFilePath = 'rust/bindings/ios/pubkymobile.swift';
+const swiftDestinationPath = 'ios/';
+
+async function runSetup() {
+  try {
+    console.log('Removing existing files...');
+    // Remove destination directories if they exist
+    await Promise.all([
+      fs.rm(frameworkDestinationPath, { recursive: true, force: true }),
+      fs.rm('ios/pubkymobile.swift', { recursive: true, force: true }),
+    ]);
+
+    console.log('Creating directories...');
+    // Create destination directories if they don't exist
+    await Promise.all([
+      fs.mkdir(frameworkDestinationPath, { recursive: true }),
+      fs.mkdir(swiftDestinationPath, { recursive: true }),
+    ]);
+
+    // Copy framework to destination
+    const frameworkTargetPath = path.join(
+      frameworkDestinationPath,
+      path.basename(frameworkPath)
+    );
+    await fs.cp(frameworkPath, frameworkTargetPath, { recursive: true });
+
+    // Copy Swift file to destination
+    const swiftTargetPath = path.join(
+      swiftDestinationPath,
+      path.basename(swiftFilePath)
+    );
+    await fs.copyFile(swiftFilePath, swiftTargetPath);
+
+    console.log('Framework and Swift file copied successfully!');
+  } catch (error) {
+    console.error('Error during setup:', error);
+    process.exit(1);
+  }
+}
+
+runSetup().catch((error) => {
+  console.error('Unhandled error:', error);
+  process.exit(1);
+});