Task: Minimal EntityClient in Rust

[charlag]

AC

• It is possible to load any Element Types and List Element Types
• It is possible to load entities without encryption
• All required headers and authentication using provided access token are included
• It is possible to handle error responses from the server
• Returned entities are dynamically typed dictionaries
• The unencrypted fields are mapped to logical values (booleans, dates etc.)
• Encrypted fields are preserved with matching type (null/bytes)

Tasks

• Serialize and deserialise json to dictionaries. (basic instance mapper)
• Allow GET requests for LET and ET types (without range requests)
• Add required headers (model version, access token, client version )access token are included
• handle error responses
• map values to to types (booleans, dates etc.)