Support for more output languages

• Added support for Graylog

Improvements in translation quality

• Added escaping mechanisms for the following platforms both as input and output: Splunk, CrowdStrike, Elastic Stack, Falcon LogScale, Microsoft Sentinel, IBM QRadar, Chronicle Security, AWS OpenSearch
• The author and license of the source rule are now added as a comment to its translation if there's no description field
• Roota:
  • Added parsing of Splunk keywords without quotes and fixed known issues with keywords
  • Added support for the != operator in Splunk queries and improved the logic of processing other operators
  • Improved translation of Roota with a Splunk query into Falcon LogScale by adding quotes to the values in table functions
  • Fixed an issue where the same default mapping could be applied for any output language
• Sigma:
  • Fixed an issue with the wrong translation of the level field into some platforms
  • Improved parsing of the and not operator