List view should sort milestones by ETA

[bajtos]

The list view should sort the child milestones in chronological order by ETA. Items with unknown ETA should be listed at the end.

Example: https://starmap.site/roadmap/github.com/space-meridian/roadmap/issues/1#view=list

[bajtos]

Is this the place where to add the sorting step?

Starmap/lib/backend/resolveChildrenWithDepth.ts

Lines 6 to 14 in b4737f5

	export async function resolveChildrenWithDepth (children: ParserGetChildrenResponse[], errorManager: ErrorManager): Promise<GithubIssueDataWithGroupAndChildren[]> {
	try {
	const issues = await resolveChildren(children, errorManager)
	return await Promise.all(issues.map((issue) => getGithubIssueDataWithGroupAndChildren(issue, errorManager, true)))
	} catch (err) {
	console.error('error:', err)
	return []
	}
	}

I may be able to contribute a pull request for this improvement.