Upgrade to Nominatim 4.4

[leonardehrenfried]

I'm also lowering the sleeps and replacing them with more retries in the check script. I hope this won't lead to more false negatives.

[what-the-diff]

PR Summary

• Integration of Nominatim version 4.4
  This PR introduces the latest version of Nominatim (4.4) to our system. We have made updates to our GitHub Action workflow file to accommodate this new version.

• Dedicated Dockerfile for Nominatim 4.4
  A Dockerfile for the stated Nominatim version has been added to ensure smooth containerized operations.

• Nominatim 4.4 Documentation
  A README file has been provided to ease understanding and usage of Nominatim version 4.4.

• Configuration files for Nominatim 4.4
  Apache and environment config files, as well as PostgreSQL import and tuning configuration files have been added for Nominatim 4.4. These are meant to streamline the setup, tuning, and running of the new version of Nominatim.

• Configuration Script for Nominatim 4.4
  A configuration script has been added to automate the setup of Nominatim 4.4.

• Docker Compose Files for Nominatim 4.4
  Two Docker Compose files have been included: one for a general instance of Nominatim 4.4 and another for a full planet instance. These will simplify the process of creating a Docker environment for these instances.

• Docker Configuration Example
  An example.md file provides a Docker configuration example for running Nominatim. This will act as guidance for users unfamiliar with Docker configurations.

• New Initialization and Start-Up Scripts
  init.sh is a new bash script designed to simplify the process of initializing Nominatim, including data import and database setup. On the other hand, start.sh has been added to help with starting Nominatim, database refreshing, Apache activation, and continuous replication. There are also two additional start-up scripts: startapache.sh and startpostgres.sh dedicated to starting Apache and PostgreSQL respectively.

These changes aim to streamline the process of working with Nominatim 4.4, enhancing the user experience and efficiency.

[philipkozeny]

great work, thanks @leonardehrenfried