Extract spinner component with style

[igor-sirotin]

Though it's just 2 lines, it's quite a duplication already. We should extract this to a component.

2-story-points-cli/view/components/issuesview/issues_view.go

Lines 35 to 36 in 6fca0f9

	s := spinner.New()
	s.Spinner = spinner.MiniDot

2-story-points-cli/view/components/issueview/issue_view.go

Lines 52 to 53 in 6fca0f9

	s := spinner.New()
	s.Spinner = spinner.MiniDot

2-story-points-cli/view/components/voteview/voteview.go

Lines 43 to 44 in 6fca0f9

	s := spinner.New()
	s.Spinner = spinner.MiniDot

2-story-points-cli/view/model.go

Lines 104 to 105 in 6fca0f9

	s := spinner.New()
	s.Spinner = spinner.MiniDot