Standardize config passes for all frontends

[prabhu]

Currently, terraform files (.tf) are only stored by javasrc2cpg. Standardizing and offering an option to store the config files for all frontends would be nice.

https://github.com/joernio/joern/blob/master/joern-cli/frontends/javasrc2cpg/src/main/scala/io/joern/javasrc2cpg/passes/ConfigFileCreationPass.scala#L72

In particular, the following file extensions are of interest.

• [ ] .xml
• [ ] .json
• [ ] .yaml/.yml
• [ ] .tf, .tfvars
• [ ] yarn.lock, Pipfile.lock