Add support for Claude \ Anthropic models via package @promptbook/anthropic-claude and add Azure OpenAI models via package @promptbook/azure-openai

Export MultipleLlmExecutionTools from @promptbook/core
Always use "modelName" not just "model"
Standartization of model providers
Delete @promptbook/wizzard
Move assertsExecutionSuccessful,checkExpectations,executionReportJsonToString,ExecutionReportStringOptions,ExecutionReportStringOptionsDefaults,isPassingExpectations,prettifyPromptbookString from @promptbook/utils to @promptbook/core
Make and use JavascriptExecutionTools as placeholder for better implementation with propper sandboxing
Implement createPromptbookLibraryFromDirectory export from @promptbook/core
Make PromptbookLibraryError
Check Promptbook URL uniqueness in SimplePromptbookLibrary (see [🦄])
Util createPromptbookLibraryFromPromise is not public anymore
Util forEachAsync export from @promptbook/utils