Weos improvements

[atoniaw]

• Please check if the PR fulfills these requirements

• [ ] The commit message follows our guidelines

• [ ] Tests for the changes have been added (for bug fixes / features)

• [ ] Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

  • Adds default CORS middleware
  • Updates http error handler to use both the custom handler and the default echo handler.

• What is the current behavior? (You can also link to an open issue here)

• What is the new behavior (if this is a feature change)?

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

• Other information: