Consider adding a case-insensitive search

[Snailedlt]

First of all, this plugin is great for renaming stuff! Great work on it!

Description

Like the title says, it would be great if case-insensitive search was added. That way I could easily check how many instances of a word there is in the repo, regardless if it's camelCase, PascalCase, snake_case, kebab-case, or any of the other supported cases :)