Function toArrayByObjectKey

For each instance of type E in the array argument map the property values into arrays keyed by the name of the property in the instance of type E.

Example

students:Student[] = [
   {id:1, name:'1', sex:'X', standard: 1, propName: 11, anotherSillyPropName:111,},
   {id:2, name:'2', sex:'Y', standard: 2, propName: 22, anotherSillyPropName:222,},
   {id:3, name:'3', sex:'Z', standard: 3, propName: 33, anotherSillyPropName:333,},
]

console.log(toArrayByObjectKey(students))
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CREDIT: Implementation provided by Georg per this SO answer: https://stackoverflow.com/questions/55404204/attempting-to-understand-reduce-functions-for-object-mapping