Specify bundle version and short version string for iOS veldrid-spirv libraries #26

Job	Run time
win-x64 Native Build	13m 10s
win-x86 Native Build	9m 22s
android-arm64-v8a Native Build	17m 32s
android-x86_64 Native Build	19m 2s
android-armeabi-v7a Native Build	18m 50s
linux-x64 Native Build	12m 46s
osx Native Build	44m 23s
ios Native Build	19m 12s
managed_build	4m 52s
	2h 39m 9s

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