Grafana version directive

[Alexey Velikiy]

So let't pub directive to all type definitions which work only for sdpecific Grafana versions.

So it woulb be like

@GrafanaVersion({ from: '4.2.2', to: '5.4.3'  })
export function foo(): void

@GrafanaVersion({ from: '7.0.1', to: '5.4.3'  })
export function bar(): void