Resources: New palettes of Liverpool

[ChaoDee]

Hi RMG team! I would like to contribute the palettes below.

Follow instruction in https://railmapgen.github.io/rmg-palette/new and paste the palette data below

Data source: 8. Wikipedia

Reference link: https://en.wikipedia.org/wiki/Merseyrail

Justification: Added Liverpool Merseyrail lines

Do not edit lines below, they are meant for bots only!!!

{"id":"liverpool","country":"GBENG","name":{"en":"Liverpool"}}

[{"id":"liverpool-northern","colour":"#0255b2","fg":"#fff","name":{"en":"Northern Line"}},{"id":"liverpool-wirral","colour":"#4ba659","fg":"#fff","name":{"en":"Wirral Line"}},{"id":"liverpool-city","colour":"#dc342f","fg":"#fff","name":{"en":"City Line"}}]

(REPLACE ME/替代我)

[wongchito]

Hi @ChaoDee ,

請於提交Issue前移除「替代我」字樣，以便機械人識別及執行自動化。多謝！