v0.23.0-alpha2 better logs

[simulot]

🏗️ Work in progress 🏗️

This an early version of immich-go version v0.23.0-alpha2
Yes, v0.23.0-alpha2, and not v1.0.0-alpha2. Let's stick to the semantic versioning.

• better logging
  • log level are effectives
  • adoption of the structured log package
  • the level DEBUG give file details and metadata
• colored log on screen
• clear separation between folder import and google import
• adoption of the linux convention of double dashes flags
• priority of EXIF data over file name for date capture
• code restructuration to enable further possibilities
  • Upload from Picasa
  • Exporting of google photos archive as a folder

[simulot]

Please share your comments on this new release.
Don't hesitate to propose new features and improvements.