chore: rename aws-kinesisfirehose-destinations → aws-kinesisfirehose-destinations-alpha (#25058)

This PR is part of a refactor to make all directory names equal to the package name of the package inside it.

It is a re-roll of #24930, but split into parts (one PR per package), so that we will cut down on merge conflicts.


----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: rix0rrr

packages/@aws-cdk/aws-kinesisfirehose-destinations/.eslintrc.js renamed to packages/@aws-cdk/aws-kinesisfirehose-destinations-alpha/.eslintrc.js

@@ -22,4 +22,5 @@ junit.xml
 
 !**/*.snapshot/**/asset.*/**
 
+!test/lambda-data-processor.js
 

packages/@aws-cdk/aws-kinesisfirehose-destinations/.gitignore renamed to packages/@aws-cdk/aws-kinesisfirehose-destinations-alpha/.gitignore

@@ -44,7 +44,7 @@
   "repository": {
     "type": "git",
     "url": "https://github.com/aws/aws-cdk.git",
-    "directory": "packages/@aws-cdk/aws-kinesisfirehose-destinations"
+    "directory": "packages/@aws-cdk/aws-kinesisfirehose-destinations-alpha"
   },
   "scripts": {
     "build": "cdk-build",

packages/@aws-cdk/aws-kinesisfirehose-destinations/.npmignore renamed to packages/@aws-cdk/aws-kinesisfirehose-destinations-alpha/.npmignore

@@ -281,7 +281,7 @@ threshold (the "buffer interval"), whichever happens first. You can configure th
 thresholds based on the capabilities of the destination and your use-case. By default, the
 buffer size is 5 MiB and the buffer interval is 5 minutes.
 
-```ts 
+```ts
 // Increase the buffer interval and size to 10 minutes and 8 MiB, respectively
 declare const bucket: s3.Bucket;
 const destination = new destinations.S3Bucket(bucket, {
@@ -414,7 +414,7 @@ new firehose.DeliveryStream(this, 'Delivery Stream', {
 });
 ```
 
-[Example Lambda data processor performing the identity transformation.](../aws-kinesisfirehose-destinations/test/integ.s3-bucket.lit.ts)
+[Example Lambda data processor performing the identity transformation.](../aws-kinesisfirehose-destinations-alpha/test/integ.s3-bucket.lit.ts)
 
 See: [Data Transformation](https://docs.aws.amazon.com/firehose/latest/dev/data-transformation.html)
 in the *Kinesis Data Firehose Developer Guide*.