* bring in source from database
* bring in transformations from database
* add regex transformations to scopevar
* Consolidate types, add better example, cleanup
* Add var only if match
* Change ScopedVar to not require text, do not leak transformation-made variables between links
* Add mappings and start implementing logfmt
* Add mappings and start implementing logfmt
* Remove mappings, turn off global regex
* Add example yaml and omit transformations if empty
* Fix the yaml
* Add logfmt transformation
* Cleanup transformations and yaml
* add transformation field to FE types and use it, safeStringify logfmt values
* Add tests, only safe stringify if non-string, fix bug with safe stringify where it would return empty string with false value
* Add test for transformation field
* Do not add null transformations object
* Break out transformation logic, add tests to backend code
* Fix lint errors I understand 😅
* Fix the backend lint error
* Remove unnecessary code and mark new Transformations object as internal
* Add support for named capture groups
* Remove type assertion
* Remove variable name from transformation
* Add test for overriding regexes
* Add back variable name field, but change to mapValue
* fix go api test
* Change transformation types to enum, add better provisioning checks for bad type name and format
* Check for expression with regex transformations
