feat: add Welsh English helper method

[wingclover]

fix #31

Proposed changes

Added Welsh English helper method as required in #31

Types of changes

What types of changes does your code introduce to Appium? Put an x in the boxes that apply

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation Update (if none of the other choices apply)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• [x] I have read the CONTRIBUTING doc
• [x] Lint and unit tests pass locally with my changes
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have added necessary documentation (if appropriate)

[codecov-io]

Codecov Report

Merging #68 into master will not change coverage. The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #68   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          51     52    +1     
  Branches        3      3           
=====================================
+ Hits           51     52    +1

Impacted Files	Coverage Δ
src/index.js	100% <100%> (ø)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 54a97b9...41a1e30. Read the comment docs.

[chgasparoto]

:tada: This PR is included in version 1.18.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: