Clear all HTTP request logs (#49)

* Create mutation to clear request logs

* Add UI for clearing all HTTP request logs

* Use consistent naming

* Explicitly delete only from http_requests

* Check if datebase is open

* Add confirmation dialog

pkg/api/models_gen.go

@@ -9,6 +9,10 @@ import (
 	"time"
 )
 
+type ClearHTTPRequestLogResult struct {
+	Success bool `json:"success"`
+}
+
 type CloseProjectResult struct {
 	Success bool `json:"success"`
 }