fix(cmd-api-server): add IPluginImport to public API surface of package

Previously this was missing from the package exports
and therefore was not accessible to
other
packages using this one.

Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

packages/cactus-cmd-api-server/src/main/typescript/public-api.ts

@@ -1,8 +1,11 @@
 export { ApiServer, IApiServerConstructorOptions } from "./api-server";
+
 export {
   ConfigService,
+  IPluginImport,
   ICactusApiServerOptions,
 } from "./config/config-service";
+
 export {
   SelfSignedPkiGenerator,
   ForgeCertificateField,