Add Office365 Source Connector

[alparish]

Signed-off-by: Alekhya Parisha aparisha@amazon.com

Description

This change implements an Office 365 source plugin for Data Prepper. The plugin interacts with the Office 365 Management API to retrieve audit logs. Key components include:

• Office365RestClient: Handles REST API calls to Office 365 Management API.
• Office365Service: Manages the business logic for fetching and processing audit logs.
• Office365CrawlerClient: Implements the CrawlerClient interface for Data Prepper integration.
• Office365Iterator: Manages the iteration over audit log items.

Added unit tests for Office365RestClient
Addressed David's comments from the previous PR.

Issues Resolved

Resolves #[Issue number to be closed when this PR is merged]

Check List

• New functionality includes testing.
• New functionality has a documentation issue. Please link to it in this PR.
  • New functionality has javadoc added
• Commits are signed with a real name per the DCO

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