feat: add WHOIS subnet querying and IP consolidation utility

- Implemented a new utility for querying WHOIS information and consolidating IP addresses by subnet.
- Added caching mechanism for WHOIS responses to improve performance.
- Introduced functions for loading and saving the WHOIS cache, querying subnets, and consolidating IPs based on a threshold.

feat: create Flask web UI for intrusion detection system

- Developed a Flask web application to manage the intrusion detection system.
- Implemented routes for scanning, reports, blocklist management, and firewall configuration.
- Added helper functions for reading files and handling requests.

feat: define routes for web UI

- Registered routes for various web pages and API endpoints in the Flask application.
- Implemented functionality for scanning, reporting, blocklist management, and firewall state retrieval.

feat: implement background scan runner for web UI

- Created a background scan runner to handle scan jobs in a separate thread.
- Managed an in-memory job store for tracking scan jobs and their statuses.
- Added persistence for scan jobs to maintain state across application restarts.

chore: update start script for Flask application

- Enhanced the PowerShell start script to check for the existence of the virtual environment.
- Added comments and structured the script for better readability and usability.

start.ps1

@@ -1,2 +1,21 @@
-## Start the application in a virtual environment
-& .\.venv\Scripts\python.exe .\app.py
+<#
+.SYNOPSIS
+    Starts the flask application in a virtual environment.
+
+.DESCRIPTION
+    This script activates the virtual environment and starts the flask application.
+    It only runs a single threaded instance of the application, so it is not suitable for production use.
+#>
+
+## Check if the virtual environment exists
+if (-Not (Test-Path -Path ".\.venv\Scripts\Activate.ps1")) {
+    Write-Host "Virtual environment not found. Please create it first."
+    exit 1
+}
+
+## Activate the virtual environment
+& .\.venv\Scripts\Activate.ps1
+
+## Start the Flask application
+Write-Host "Starting the Flask application..."
+& .\.venv\Scripts\python.exe .\app.py