Final changes for v0.2.0

[krashish8]

Changes proposed in this pull request:

• API:
  • Add exploration_level (default 5) and timeout (default 10min) to projects.
  • Rename distance_calc to duration_calc
  • Change data field in shipment to p_data and d_date
• Demo Application:
  • Add project parameters in the frontend
  • Add scheduling options in the frontend - normal, or fresh scheduling.
• Configuration:
  • Change version to 0.2.0
  • Add OsrmUrl and ValhallaUrl to app.env for API
  • Add BaseUrl and OsrmUrl to config.js file for demo application
• Fix GitHub workflows before releasing.
• Update NEWS, README and docs

@Georepublic/maintainer