feat: Add Edgeware

[carumusan]

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[carumusan]

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[carumusan]

Needs metadata support included. Think it's best worked on after the westend pull request (#541) has been committed as it contains useful refactoring.

[hanwencheng]

Thanks for the work and submitting the PR!

Meta data update info could be find here.

I would love to help merge it after typescript #521 and westend #541 PR.

[hanwencheng]

closes this one, integrate in #555.