Create LISEZMOI.md

[symulacr]

English Translation of the README.md

This commit includes a complete translation of the README.md file for the Sei-Chain project into British English, providing a localised version accessible to British English-speaking users. The translation has been done while faithfully preserving the original content, enhancing readability and comprehension for British English readers.

Signed-off-by: LowMow

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