Improve the basic.rs client example

[joepio]

@AlexMikhalev wanted to have some more simple examples of how to use the atomic_lib rust library. The current basic.rs misses some features:

• Full text search
• Collection / pagination
• Signing in with agent
• Creating a resource

[AlexMikhalev]

I have the following flow in mind:

1. Demonstrate how to create a store passing server URL
2. Demonstrate how to create a store with an authenticated agent passing URL an agent string
3. Demonstrate how to read from the store
4. demonstrate how to write to store
5. Demonstrate how to fetch data from the atomic server using collections
6. Demonstrate how to search over atomic server using search API (tantivy)
7. add paginations, but I am more interested in retrieving all data and re-ranking them - Terraphim will handle re-ranking.