Add Amazon Bedrock integration (#111)

* Add Amazon Bedrock integration

* add logo

* Rename amazon-bedrock to amazon-bedrock.md

* Update amazon-bedrock.md

* Remove mention of embed models

integrations/amazon-bedrock.md

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+---
+layout: integration
+name: Amazon Bedrock
+description: Use Models from AI21 Labs, Anthropic, Cohere, Meta, Stability AI, and Amazon via Amazon Bedrock with Haystack
+authors:
+    - name: deepset
+      socials:
+        github: deepset-ai
+        twitter: deepset_ai
+        linkedin: deepset-ai
+pypi: https://pypi.org/project/amazon-bedrock-haystack
+repo: https://github.com/deepset-ai/haystack-core-integrations/tree/main/integrations/amazon_bedrock
+type: Model Provider
+report_issue: https://github.com/deepset-ai/haystack-core-integrations/issues
+logo: /logos/aws.png
+version: Haystack 2.0
+toc: true
+---
+
+### Table of Contents
+
+- [Overview](#overview)
+- [Installation](#installation)
+- [Usage](#usage)
+    - [AmazonBedrockGenerator](#AmazonBedrockGenerator)
+
+## Overview
+
+[Amazon Bedrock](https://aws.amazon.com/bedrock/) is a fully managed service that makes high-performing foundation models from leading AI startups and Amazon available for your use through a unified API.  You can choose from various foundation models to find the one best suited for your use case. More information can be found on the [documentation page](https://docs.haystack.deepset.ai/v2.0/docs/amazonbedrockgenerator).
+
+## Installation
+
+Install the Amazon Bedrock integration:
+```bash
+pip install amazon-bedrock-haystack
+```
+
+## Usage
+
+Once installed, you will have access to an AmazonBedrockGenerator that supports models from various providers: 
+- Anthropic's Claude
+- AI21 Labs' Jurassic-2
+- Stability AI's Stable Diffusion
+- Cohere's Command
+- Meta's Llama 2
+- Amazon Titan language models
+
+### AmazonBedrockGenerator
+
+To use this integration for text generation, initialize a `AmazonBedrockGenerator` with the model name and aws credentials: 
+
+```python
+from amazon_bedrock_haystack import AmazonBedrockGenerator
+
+aws_access_key_id="..."
+aws_secret_access_key="..."
+aws_region_name="eu-central-1"
+
+generator = AmazonBedrockGenerator(model_name="anthropic.claude-v2", aws_access_key_id=aws_access_key_id, aws_secret_access_key=aws_secret_access_key, aws_region_name=aws_region_name)
+result = generator.run("Who is the best American actor?")
+for reply in result["replies"]:
+    print(reply)
+```
+Output: 
+```shell
+'There is no definitive "best" American actor, as acting skill and talent a# re subjective. However, some of the most acclaimed and influential American act# ors include Tom Hanks, Daniel Day-Lewis, Denzel Washington, Meryl Streep, Rober# t De Niro, Al Pacino, Marlon Brando, Jack Nicholson, Leonardo DiCaprio and John# ny Depp. Choosing a single "best" actor comes down to personal preference.'
+```