Typos in filename of selection-event model and enum

[kobL]

When I was looking through the code I noticed a missing "n" in "event" and point to much in those two filenames:

src/lib/common/types/selection-evet.enum..ts
src/lib/common/types/selection-evet.model.ts

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[vlio20]

will be resolved 8.1.0 (3cdbf96)

[vlio20]

thanks @kobL for the PR