[BCI-3989][core] - CR methods err when service unstarted

[Farber98]

Task Description:

CR methods should throw an error if service is unstarted

This PR:

• Adds StartChainReader and CloseChainReader methods to the EVM ChainReaderInterfaceTester.
• Check if the service is already started before calling GetLatestValue, BatchGetLatestValues, and QueryKey
  • Didn't add the check to Bind, we can discuss later if it's needed there too.
  • Added an error case for each of the methods when calling without starting the service previously.
• Add Start() call to consumers of CR before using it.
• Modify EVM tests to include StartChainReader and CloseChainReader calls

Ticket:

• BCI-3989

Depends on:

• [BCI-3989][common] - CR methods err when service unstarted chainlink-common#705

[Farber98]

Still need to

• Improve tests checking errors when calling the methods without the service started
• Find a workaround and prevent the breaking change + multiple repo PR

EDIT:

• done
• couldn't

[Farber98]

Refactored the structure of EVMInterfaceTester for clarity and to make the proposed solution work:

• Setup receives the started flag to check if we should return CR started
• Setup divided into small functions to make it easier to understand the purpose/responsibility of each one.
• Get functions now only return the instance. Setup is handled separately

[cl-sonarqube-production]

Quality Gate passed

Issues
0 New issues
1 Fixed issue
0 Accepted issues

Measures
0 Security Hotspots
89.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube