Add logform dependency to datadog-winston (#41072)
Add logform dependency to datadog-winston (#41072)

winston-transport depends on logform, but only has it as a
devDependency. I opened a PR to change this, but I don't know when it
will be merged; the bug has been open since May. In the meantime,
datadog-winston will do what all other clients have had to: add logform
as a dependency itself.
georgemarshall/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped