Shaik Saifulla

@mossmaurice @FerdinandSpitzschnueffler I think all the comments are fixed. ready to merge.

> We should still test the new operator== and operator!= overloads where the first argument has type nullopt_t. This is addressed.

> The public API of the optional comparision operators has changed. Please add this to `doc/website/release-notes/iceoryx-unreleased.md` as refactoring item and an additional migration path for users at the end of...

@FerdinandSpitzschnueffler the `TODO` is kept only for `AutosarC++19_03-A13.5.5` it may require a separate PR to address all of these at once.

> Note that the commit message should be like: `iox-#xyz Fix axivion violations` or `iox-#xyz Fix static analysis violations`. Ideally more specific (what or where are the main fixes), but...