Add golang-ci and other linters #7

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12 errors

Process completed with exit code 1.

golangci-lint exit with code 5

notebook.main calls manager.New, which eventually calls http2.ConfigureTransports

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.ConnectionError.Error

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.ErrCode.String

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.FrameHeader.String

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.FrameType.String

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.GoAwayError.Error

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.Setting.String

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.SettingID.String

culler.UpdateNotebookLastActivityAnnotation calls fmt.Sprintf, which eventually calls http2.StreamError.Error

culler.getNotebookResourceResponse calls http.Client.Get, which eventually calls http2.Transport.NewClientConn