🏷️ Convert to ES Modules and NodeNext

[NatoBoram]

Motivation

https://www.typescriptlang.org/tsconfig/#verbatimModuleSyntax

When using verbatimModuleSyntax in a consuming app, compilation fails because Jira.js is a CommonJS library in TypeScript. This can be fixed with disableSourceOfProjectReferenceRedirect, but it's a bit of a shame to lose access to the source code when you have it right there. A better option would be to migrate the library to modern JavaScript standards and improve performance and compatibility along the way.

Changes

• [x] Use https://github.com/bennycode/ts2esm to convert the project to ES Modules
• [x] Use https://github.com/ian-craig/ts-autofix to implement verbatimModuleSyntax
• [x] Migrate from ava to vitest
• [x] Use Rollup to produce both a commonjs and an esm build

References

• Closes #313
• Closes https://github.com/coderabbitai/jira.js/pull/1