Add MicrobotsLogAnalyzer custom ADO task

[MadhurAggarwal]

Adds a custom Azure DevOps task, MicrobotsLogAnalyzer@0, for running Microbots LogAnalysisBot against log files using Azure OpenAI models, with authentication through an Azure Resource Manager Service Connection.

Overview

• Added the MicrobotsLogAnalyzerTask Azure Pipelines task.
• Added Azure DevOps extension manifest and npm dependencies required by the task for connecting to Service Connection.
• Added documentation for Packaging, Publishing, and Using the task in a pipeline.
• Added a sample Azure Pipelines YAML file.

Change Details

• .gitignore: Ignores generated node_modules folders used while packaging the ADO task.
• README.md: Added a brief guide for the new MicrobotsLogAnalyzerTask.
• azure-pipelines/vss-extension.json: Defines the ADO extension that contributes the custom pipeline task. This file is needed for publishing the task.
• azure-pipelines/MicrobotsLogAnalyzerTask/task.json: Defines the MicrobotsLogAnalyzer@0 task metadata, inputs, Node 20 handler, and task restrictions (restrictions ensure that LLM Outputs don't setup unwanted ENVs in ADO Pipeline, for example printing ##vso[task.setvariable as part of Log RCA)
• azure-pipelines/MicrobotsLogAnalyzerTask/index.js: Implements Main Workflow: validates inputs, logs into Azure Service Connection, prepares Python venv, runs LogAnalysisBot, and prints the analysis.
• azure-pipelines/MicrobotsLogAnalyzerTask/package.json: Declares the Node dependencies required by the task.
• azure-pipelines/MicrobotsLogAnalyzerTask/package-lock.json: Locks task Node dependency versions for reproducible packaging.
• docs/azure-pipelines-log-analyzer.md: Documents prerequisites, packaging, publishing, usage, inputs, and task behavior.
• docs/examples/azure-pipelines/microbots-log-analyzer.yml: Provides a sample ADO YAML for using MicrobotsLogAnalyzer@0.
• mkdocs.yml: Adds the new Azure Pipelines Log Analyzer guide to the docs navigation.

Added 12 Unit tests:

[MadhurAggarwal]

Moved From Forked Repo PR: #141