Remove ignoreTest in documentation tests

[novoj]

Currently there are a few documentation tests that are disabled by the ignoreTest keyword because the GraphQL / REST requires special treatment - such as domain / url specification and environment preparation that is currently not happening properly.

This issue should investigate and fix all related issues so that the ignoreTest can be eliminated.

[novoj]

I removed the ignoredTests flag and tried to get the tests to run. Now the GraphQL / REST / C-Sharp executables are setup/teardown by java require snippets (and a few other fixes were made), but it still doesn't run. Try io.evitadb.documentation.UserDocumentationTest#testSingleFileDocumentation tests - all java examples are ok, but the graphql/rest fail - I think it's got two roots:

• Sometimes we need to call the endpoint /system and sometimes /evita (catalog name).
• the examples are outdated and cannot be executed correctly

I need to confirm my hypothesis, and if it's the case, I'll continue with code fixes on Monday. But I cannot estimate how much the examples are correct or not (mutations).