chore: Move everything into package/ (#1745)

* Move everything into package

* Remove .DS_Store

* Move scripts and eslintrc to package

* Create CODE_OF_CONDUCT.md

* fix some links

* Update all links (I think)

* Update generated docs

* Update notice-yarn-changes.yml

* Update validate-android.yml

* Update validate-cpp.yml

* Delete notice-yarn-changes.yml

* Update validate-cpp.yml

* Update validate-cpp.yml

* Update validate-js.yml

* Update validate-cpp.yml

* Update validate-cpp.yml

* wrong c++ style

* Revert "wrong c++ style"

This reverts commit 55a3575589c6f13f8b05134d83384f55e0601ab2.

package/ios/React Utils/Promise.swift

@@ -0,0 +1,69 @@
+//
+//  Promise.swift
+//  mrousavy
+//
+//  Created by Marc Rousavy on 14.01.21.
+//  Copyright © 2021 mrousavy. All rights reserved.
+//
+
+import Foundation
+
+// MARK: - Promise
+
+/**
+ * Represents a JavaScript Promise instance. `reject()` and `resolve()` should only be called once.
+ */
+class Promise {
+  init(resolver: @escaping RCTPromiseResolveBlock, rejecter: @escaping RCTPromiseRejectBlock) {
+    self.resolver = resolver
+    self.rejecter = rejecter
+  }
+
+  func reject(error: CameraError, cause: NSError?) {
+    rejecter(error.code, error.message, cause)
+  }
+
+  func reject(error: CameraError) {
+    reject(error: error, cause: nil)
+  }
+
+  func resolve(_ value: Any?) {
+    resolver(value)
+  }
+
+  func resolve() {
+    resolve(nil)
+  }
+
+  // MARK: Private
+
+  private let resolver: RCTPromiseResolveBlock
+  private let rejecter: RCTPromiseRejectBlock
+}
+
+/**
+ * Wrap a block with an automatic promise resolver and rejecter.
+ *
+ * The value returned by the `block` must be serializable by the React Native bridge, or `nil`.
+ * The error thrown by the `block` should be a `CameraError`
+ */
+func withPromise(_ promise: Promise, _ block: () throws -> Any?) {
+  do {
+    let result = try block()
+    promise.resolve(result)
+  } catch let error as CameraError {
+    promise.reject(error: error)
+  } catch let error as NSError {
+    promise.reject(error: CameraError.unknown(message: error.description), cause: error)
+  }
+}
+
+/**
+ * Wrap a block with an automatic promise resolver and rejecter.
+ *
+ * The value returned by the `block` must be serializable by the React Native bridge, or `nil`.
+ * The error thrown by the `block` should be a `CameraError`
+ */
+func withPromise(resolve: @escaping RCTPromiseResolveBlock, reject: @escaping RCTPromiseRejectBlock, _ block: () throws -> Any?) {
+  return withPromise(Promise(resolver: resolve, rejecter: reject), block)
+}