Support for M1 MacBook

[hongfeiyang]

Description
Description of what the issue is about.

Currently the project does not build on M1 Mac

Expected behavior
What you expected to happen.

Current behavior
What happened.

[CP] Unable to find matching .xcframework slice in '/Users/hongfeiyang/dev/FFmpegTest/Pods/mobile-ffmpeg-full/mobileffmpeg.xcframework mobileffmpeg framework ios-arm64 ios-x86_64-maccatalyst ios-x86_64-simulator' for the current build architectures (arm64).

Screenshots
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Logs
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Environment

• Platform: [e.g. Android/IOS]
• Architecture: [arm-v7a, arm-v7a-neon, arm64-v8a, x86, x86_64, armv7, armv7s, arm64, i386, x86_64]
• Version (if applicable) [e.g. v1.2]
• Source branch (if applicable) [e.g. master, dev-v2.x]
• Xcode version (if applicable) [e.g. 7.3.1, 9.0.1]
• Cocoapods version (if applicable) [e.g. 1.2.1]
• Android Studio version (if applicable) [e.g. 3.1]
• Android NDK version (if applicable) [e.g. 16b, 17c]

Other
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[confucious]

Root issue: #597