[DevToys] Add Environment value to JSON converter

### What feature or new tool do you think should be added to DevToys? A converter that transforms text from this format: ```text Usage=Direct LimitRequests=25 ConnectionString=whatever ``` into this format ```json { "Usage":"Direct", "LimitRequests":"25", "ConnectionString":"whatever" } ``` ### Why do you think this is needed? When working on many environments (like k8s), you can retrieve Environment Variables using the command `printenv`. It returns the variables in the format KEY=VALUE, like ```text Usage=Direct LimitRequests=25 ConnectionString=whatever ``` However, for local development (like when using launchSettings.json for .NET projects) a JSON format is easier to use and reuse. This functionality is useful for reading and manipulating environment variables copied from a system, like k8s or the local machine. ### Solution/Idea ```text Usage=Direct LimitRequests=25 ConnectionString=whatever ``` Must be converted into ```json { "Usage":"Direct", "LimitRequests":"