Add ARM64 support for watchOS.

CMake/iOS.cmake

@@ -199,7 +199,7 @@ if (NOT DEFINED IOS_ARCH)
     elseif (IOS_PLATFORM STREQUAL "SIMULATOR")
         set (IOS_ARCH "i386;x86_64;arm64")
     elseif (IOS_PLATFORM STREQUAL "WATCHOS")
-        set (IOS_ARCH "armv7k;arm64_32")
+        set (IOS_ARCH "armv7k;arm64_32;arm64")
     elseif (IOS_PLATFORM STREQUAL "WATCHSIMULATOR")
         set (IOS_ARCH "i386;x86_64;arm64")
     elseif (IOS_PLATFORM STREQUAL "TVOS")

example/ios/Python-Apple-support.patch

@@ -14,7 +14,7 @@ index 695be54..eda7b0d 100644
  # - BZip2-macOS     - build BZip2 for macOS
  # - BZip2-iOS       - build BZip2 for iOS
  # - BZip2-tvOS      - build BZip2 for tvOS
-@@ -30,37 +33,51 @@ PYTHON_VERSION=2.7.14
+@@ -30,37 +33,52 @@ PYTHON_VERSION=2.7.14
  PYTHON_VER=$(basename $(PYTHON_VERSION))
  
  OPENSSL_VERSION_NUMBER=1.0.2
@@ -63,11 +63,12 @@ index 695be54..eda7b0d 100644
 +
  # watchOS targets
 -TARGETS-watchOS=watchsimulator.i386 watchos.armv7k
-+TARGETS-watchOS=watchos.armv7k watchos.arm64_32
++TARGETS-watchOS=watchos.armv7k watchos.arm64_32 watchos.arm64
  CFLAGS-watchOS=-mwatchos-version-min=4.0
 -CFLAGS-watchos.armv7k=-fembed-bitcode
 +CFLAGS-watchos.armv7k=
 +CFLAGS-watchos.arm64_32=
++CFLAGS-watchos.arm64=
  PYTHON_CONFIGURE-watchOS=ac_cv_func_sigaltstack=no
  
 +# watchOS-simulator targets
@@ -77,7 +78,7 @@ index 695be54..eda7b0d 100644
  # override machine types for arm64
  MACHINE_DETAILED-arm64=aarch64
  MACHINE_SIMPLE-arm64=arm
-@@ -194,9 +211,11 @@ endif
+@@ -194,9 +212,11 @@ endif
  
  	# Configure the build
  ifeq ($2,macOS)

example/ios/README.md

@@ -8,7 +8,7 @@ For example of usage take a look at our [Swift example](https://github.com/tdlib
 
 To compile `TDLib` you will need to:
 * Install the latest Xcode via `xcode-select --install` or downloading it from [Xcode website](https://developer.apple.com/xcode/).
-  It is not enough to install only command line developer tools to build `TDLib` for iOS.
+  It is not enough to install only command line developer tools to build `TDLib` for iOS. Xcode >= 14.0 is required to build TDLib for watchOS.
 * Install other build dependencies using [Homebrew](https://brew.sh):
 ```
 brew install gperf cmake coreutils