feat: plugin for remark-breaks (#467)

* feat: plugin for remark-breaks

* fix: update package-lock.json

* fix: styling

Co-authored-by: Jacky Zhao <j.zhao2k19@gmail.com>

* Update linebreaks.ts

* Update index.ts

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Co-authored-by: Jacky Zhao <j.zhao2k19@gmail.com>

quartz/plugins/transformers/index.ts

@@ -8,3 +8,4 @@ export { ObsidianFlavoredMarkdown } from "./ofm"
 export { OxHugoFlavouredMarkdown } from "./oxhugofm"
 export { SyntaxHighlighting } from "./syntax"
 export { TableOfContents } from "./toc"
+export { HardLineBreaks } from "./linebreaks"