feat(api)!: make asAspect private, remove documentation

Turn Lumigo.asAspect as private, as it cannot set the `lumigo:auto-trace` tags correctly: tags in CDK are themselves an aspect, and an aspect cannot call another.

BREAKING CHANGE: Lumigo.asAspect is now a private function.

README.md

@@ -45,21 +45,6 @@ new Lumigo({lumigoToken:SecretValue.secretsManager('LumigoToken')}).traceEveryth
 app.synth();
 ```
 
-The `Lumigo.traceEverything` functionality is built using CDK [Aspects](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.Aspects.html), which can also be used directly as follows:
-
-```typescript
-import { Lumigo } from '@lumigo/cdk-constructs-v2';
-import { App, Aspects, SecretValue } from 'aws-cdk-lib';
-
-const app = new App();
-
-// Add here stacks and constructs
-
-Aspects.of(app).add(new Lumigo({lumigoToken:SecretValue.secretsManager('LumigoToken')}).asAspect());
-
-app.synth();
-```
-
 ### Instrumenting a CDK stack
 
 The following code will apply Lumigo autotracing to all the [supported constructs](#supported-constructs) in the instrumented stack:

src/lumigo.ts

@@ -96,7 +96,7 @@ export class Lumigo {
     Aspects.of(root).add(this.asAspect(props));
   }
 
-  public asAspect(props: LumigoAspectProps = {
+  private asAspect(props: LumigoAspectProps = {
     lambdaEnableW3CTraceContext: false,
   }): IAspect {
     const lumigo = this;