* feat(nameHeaders): add feature flag
* add safe parsing of headers
* use headers in loki datasource
* Loki: add option to pass headers to Loki
* Loki: add datasource tests for dashboard names
* cleanup
* DataSourceWithBackend: add test
* rename to `sanitizeHeader`
* Loki: add condition when to add headers
* Loki: add e2e tests
* Loki: change test name