feat: unify accent insertion and match accented first letter input

[Harjot1Singh]

Summary of PR

Updates to gurmukhi-utils@3.1.0. This allows for removing some existing code and refactoring to use more of gurmukhi-utils.

Inserting and deleting accents are resolved, as the input is no longer converted to ascii (but let me know if this behaviour is incorrect).

Also does not incorrectly highlight full word matches with any trailing spaces.

Finally, first-letter searching with accented characters like Z will correctly return results.

Before

After

Tests for unexpected behavior

• Unicode inputs
• Ascii inputs
• Deleting and typing in both
• Searching for test queries with first letter accents

Time spent on PR

1.5hrs

Linked issues

Fixes #166 Fixes #344 Fixes #540

Reviewers

@bhajneet