Feature Request: Detect duplicate lines appearing in different files

[liyuhang1997]

Example: Companies.md, Search_engine.md

Companies.md

# Companies

## Google

[Google](https://www.google.com/)

## Microsoft

[Microsoft – Cloud, Computers, Apps & Gaming](https://www.microsoft.com/en-us)

Search_engine.md

# Search engine

## Bing

[Bing](https://www.bing.com/)

## Google

[Google](https://www.google.com/)

Expect result:

------------------ Results ------------------
⚙️[trimStart] [trimEnd]
✅2 duplicate values found:
[1/2] [Companies.md] 3 lines, [Search_engine.md] 7 lines
## Google
[2/2] [Companies.md] 5 lines, [Search_engine.md] 9 lines
[Google](https://www.google.com/)