GLEGram 12.5 — Initial public release

Based on Swiftgram 12.5 (Telegram iOS 12.5).
All GLEGram features ported and organized in GLEGram/ folder.

Features: Ghost Mode, Saved Deleted Messages, Content Protection Bypass,
Font Replacement, Fake Profile, Chat Export, Plugin System, and more.

See CHANGELOG_12.5.md for full details.

submodules/TelegramCore/Sources/Network/FetchHttpResource.swift

@@ -0,0 +1,35 @@
+import Foundation
+import Postbox
+import SwiftSignalKit
+import MtProtoKit
+
+public func fetchHttpResource(url: String, preserveExactUrl: Bool = false) -> Signal<MediaResourceDataFetchResult, MediaResourceDataFetchError> {
+    var urlString: String? = url
+    if !preserveExactUrl {
+        urlString = url.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)
+    }
+    if let urlString, let url = URL(string: urlString) {
+        let signal = MTHttpRequestOperation.data(forHttpUrl: url)!
+        return Signal { subscriber in
+            subscriber.putNext(.reset)
+            let disposable = signal.start(next: { next in
+                if let response = next as? MTHttpResponse {
+                    let fetchResult: MediaResourceDataFetchResult = .dataPart(resourceOffset: 0, data: response.data, range: 0 ..< Int64(response.data.count), complete: true)
+                    subscriber.putNext(fetchResult)
+                    subscriber.putCompletion()
+                } else {
+                    subscriber.putError(.generic)
+                }
+            }, error: { _ in
+                subscriber.putError(.generic)
+            }, completed: {
+            })
+            
+            return ActionDisposable {
+                disposable?.dispose()
+            }
+        }
+    } else {
+        return .never()
+    }
+}