add SearchByKMP

[midzer]

Description

KMP search algorithm by feature discussion in #880

Should fix #1229

Types of changes

• Chore (tooling change or documentation change)
• Refactor (non-breaking change which maintains existing functionality)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• My code follows the code style of this project.
• I have added new tests for the bug I fixed/the new feature I added.
• I have modified existing tests for the bug I fixed/the new feature I added.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[midzer]

Note: this PR has not been tested yet, as npm watch environment threw other, unrelated errors in the browser dev console. Also, tests and linter has not been run.

[Xon]

@midzer you can ignore those e2e test failures, but the unit tests probably need a bit more work and eslint run on the code to match the rest of the code base.

[Xon]

I've setup a new v12 branch for new feature work, once that is done it can get merged into main