[LambdaDevX] Add Base Demo Projects for Lambda Debug Mode

[MEPalma]

LocalStack recently introduced Lambda Debug Mode. A preview feature that aims at improving the development experience of Lambda functions. The following changes propose the addition of sample projects to help the user to familiarise with Lambda Debug Mode. In particular, it introduces 3 sample projects:

• java/base-enable-lambda-debug-mode which consists of debugging one java lambda function through Lambda Debug Mode and a Lambda Debug Mode configuration file
• python/base-enable-lambda-debug-mode which consists of debugging one python lambda function through Lambda Debug Mode and a Lambda Debug Mode configuration file
• python/base-multiple-lambda-debug-mode which consists of debugging two lambda function through Lambda Debug Mode and a Lambda Debug Mode configuration file
• python/base-concurrent-lambda-debug-mode which consists of debugging a lambda function with concurrent invocations to the same lambda function