Vattenfall InCharge v0.4.3-beta.1

Pre-release for testing My InCharge report downloads.

Changes:

• Adds the vattenfall_incharge.download_my_incharge_report service.
• Supports CSV and XLSX charging-history report exports.
• Supports portal-like periods: this week, last 7 days, last month, last 30 days, this month, last 12 months, this year, last year and custom date ranges.
• Uses the verified portal export flow: trigger export, read the file notification, resolve the file endpoint, download the Azure blob, then save the file locally.
• Saves reports under /config/www/vattenfall_incharge/reports and posts a Home Assistant notification with a local download link.