* Performance: Standardize lodash imports to use destructured members
Changes lodash imports of the form `import x from 'lodash/x'` to
`import { x } from 'lodash'` to reduce bundle size.
* Remove unnecessary _ import from Graph component
* Enforce lodash import style
* Fix remaining lodash imports
* Chore: Remove angular dependency from data sources
* Removes default export for time and template srvs
Also uses @grafana/runtime versions of the interfaces where possible
* Replace usage of internal templateSrv where possible
* Use runtime templateSrv in a couple more places
