* add error-handling exercise

* [CI] Format code

* add github username and update proof.ci.js and  error-handling.js

* Edit introduction and update proof.ci.js, error-handling.js, and error-handling.spec.js

* Update exercises/practice/error-handling/error-handling.js

Co-authored-by: Derk-Jan Karrenbeld <derk-jan+github@karrenbeld.info>

* edit introduction.md proof.ci.js and error-handling.js

* fix test passing by default

* add handling for empty string

* remove generic line

* edit instructions.md, add more tests

* Edit error-handling.spec.js to include test for specific errors and test for generic errors and test for error messages

* Update exercises/practice/error-handling/.docs/introduction.md

Co-authored-by: Cool-Katt <stani_s1@abv.bg>

* Update exercises/practice/error-handling/.docs/introduction.md

Co-authored-by: Cool-Katt <stani_s1@abv.bg>

* Update exercises/practice/error-handling/error-handling.spec.js

Co-authored-by: Cool-Katt <stani_s1@abv.bg>

* edit test file and change difficulty level to 4 which is medium

* [CI] Format code

* Update introduction.md

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Derk-Jan Karrenbeld <derk-jan+github@karrenbeld.info>
Co-authored-by: Cool-Katt <stani_s1@abv.bg>

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.3 to 7.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@df4cb1c...9c091bb)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 6.4.0 to 7.0.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@48b55a0...8207627)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [actions/checkout](https://github.com/actions/checkout) from 7.0.0 to 7.0.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@9c091bb...3d3c42e)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 7.0.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [github/codeql-action](https://github.com/github/codeql-action) from 4 to 4.37.3.
- [Release notes](https://github.com/github/codeql-action/releases)
- [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md)
- [Commits](github/codeql-action@v4...v4.37.3)

---
updated-dependencies:
- dependency-name: github/codeql-action
  dependency-version: 4.37.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

[no important files changed]