Fix redundant implementation of interfaces and clean deprecated fabric8 methods

[kornys]

What is the purpose of the change

• Code clean remove redundant implementation of Namespaced interface
• Add .vscode to .gitignore
• Fix letfover usage of deprecated createOrUpdate method from fabric8 in examples

Brief change log

(for example:)

• Remove redundant implementation of Namespaced interface in API module
• Clean deprecated usage of fabric8 methods in examples
• .vscode folder is ignored by git

Verifying this change

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (no)
• The public API, i.e., is any changes to the CustomResourceDescriptors: (no)
• Core observer or reconciler logic that is regularly executed: (no)

Documentation

• Does this pull request introduce a new feature? (no)

[kornys]

@gyfora commits merged into one PR

[csviri]

LGTM, thank you @kornys