Mark IGListAdapter, IGListSectionController and IGListBindable as a N… #148

Job	Run time
Run Danger	0s
CocoaPods Lint	4m 28s
Verify Carthage build XCFramework	5m 35s
Build Examples and UI tests. (platform=iOS Simulator,name=iPhone 14 Pro,OS=16.4, platform=tvOS Si...	14m 30s
Unit Test iOS (platform=iOS Simulator,name=iPhone 14 Pro)	7m 54s
Unit Test macOS	3m 41s
Verify SPM build by invoking `xcodebuild` on Package.swift (IGListDiffKit)	2m 37s
Verify generate_spm_sources_layout.sh is not broken	38s
Verify SPM build by invoking `xcodebuild` on Package.swift (IGListKit)	2m 42s
Verify SPM build by invoking `xcodebuild` on Package.swift (IGListSwiftKit)	1m 53s
	43m 58s

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