[lldb] add RISCV target specific info in API tests (#99039)
Add information about RISCV first register in python API testsuite, that
is used to check register readability in tests.
Fixed tests on RISCV target:
TestBreakpointByFileColonLine.BreakpointByLineAndColumnTestCase
TestAddressBreakpoints.AddressBreakpointTestCase
TestBreakpointAutoContinue.BreakpointAutoContinue
TestInterruptBacktrace.TestInterruptingBacktrace
TestBadAddressBreakpoints.BadAddressBreakpointTestCase
TestScriptedResolver.TestScriptedResolver
TestStopHookScripted.TestStopHooks
TestBreakpointConditions.BreakpointConditionsTestCase
TestLocalVariables.LocalVariablesTestCase
TestFindLineEntry.FindLineEntry
TestScriptedResolver.TestScriptedResolver
TestInlineSourceFiles.InlineSourceFilesTestCase
TestModuleAndSection.ModuleAndSectionAPIsTestCase
TestFrameVar.TestFrameVar
TestInferiorAssert.AssertingInferiorTestCase
TestInferiorCrashing.CrashingInferiorTestCase
TestInferiorCrashingStep.CrashingInferiorStepTestCase
TestRegistersIterator.RegistersIteratorTestCase
TestCoroutineHandle.TestCoroutineHandle
TestWithLimitDebugInfo.TestWithLimitDebugInfo
TestLLDBIterator.LLDBIteratorTestCase
TestMemoryWrite.MemoryWriteTestCase
TestNestedTemplate.NestedTemplateTestCase
TestParrayVrsCharArrayChild.TestParrayVrsCharArrayChild
TestRecursiveInferior.CrashingRecursiveInferiorTestCase
TestRecursiveInferiorStep.CrashingRecursiveInferiorStepTestCase
TestRunLocker.TestRunLocker
TestSampleTest.RenameThisSampleTestTestCase
TestUniqueTypes3.UniqueTypesTestCase3
TestPrintStackTraces.ThreadsStackTracesTestCase
TestUnicodeSymbols.TestUnicodeSymbols
TestUnusedInlinedParameters.TestUnusedInlinedParameters
TestValueVarUpdate.ValueVarUpdateTestCase
TestPtrRef2Typedef.PtrRef2TypedefTestCase
TestDataFormatterStdIterator.StdIteratorDataFormatterTestCase
TestDataFormatterStdString.StdStringDataFormatterTestCase
TestDataFormatterStdVBool.StdVBoolDataFormatterTestCase