Incompatability with verbatimModuleSyntax

[LoaderB0T]

Hi there,

we just discovered that the protoc-gen-ng package is incompatible with the verbatimModuleSyntax flag in the tsconfig.

An example of what gets generated:

import {
  GrpcCallType,
  GrpcClient,
  GrpcClientFactory,
  GrpcEvent,
  GrpcMetadata,
} from '@ngx-grpc/common';

However, some of these imports have to be imported with the type keyword when using verbatimModuleSyntax
So for this example, the correct import statement would be:

import {
  GrpcCallType,
  type GrpcClient,
  type GrpcClientFactory,
  type GrpcEvent,
  GrpcMetadata,
} from '@ngx-grpc/common';

Since Angular 18.2 using isolatedModules in the tsconfig provides a performance boost and the developer experience is better when using verbatimModuleSyntax as the auto imports eg. in vscode are more usable that way.

I will create a PR with a proposal for a fix shortly.
Note: changing this does NOT create a breaking change