feat: heuristic-based syntax detection

[pasteley]

Currently, the tool relies on file extensions to determine the input syntax. It would be beneficial to enhance the tool with heuristic-based syntax recognition, allowing it to infer the input type from the content itself.

Use Case:
For example, when running a command like:

kubectl get po -n kube-system my-pod -o yaml | qq

the output is YAML, but since no input time is provide, qq fails to recognize the format and returns the following error:

error parsing input: invalid character 'a' looking for beginning of value
null

[JFryy]

Definitely something to consider if other folks want this type of thing. I am weighing the options between this behavior being exclusively explicit or to include this - in some sense this introduces a class of problems from users potentially relying on heuristics that can be wrong at times.