[BUG] Implement proper handling and testing for OpenAPI toolkits

[epamLDadayan]

Implement proper handling and testing for OpenAPI toolkits

All required information must be properly handled, selected: e.g. URLs, Authentication, APIs, tools, etc.

OpenAPI toolkits are working propelry as part of agent.

Example Agent: https://dev.elitea.ai/app/373/agents/all/26?viewMode=owner&name=OpenAPI%20Toolkit%20Testing

Example Toolkit: https://dev.elitea.ai/app/373/toolkits/all/80?viewMode=owner&name=Pet%20Store

[epamLDadayan]

@daniilmotsniy please check whether on BE everything is available and we need only to properly show all tool paramaters in Testing Tools to allow it to work.

@HawkQing1 please work with @daniilmotsniy .

[daniilmotsniy]

@epamLDadayan is it still actual, seems like we have authentication and APIs?

CC @HawkQing1

[epamLDadayan]

@daniilmotsniy , @HawkQing1 yes it is the part of Testing Tools for OpenAPI toolkit