[Feature Request]: Add new command `importer get`

[rytswd]

🔮 Relevant Command

New command

🗂 Language Type

All

🔎 Request Details

Rather than using the Importer Marker in file to check whether the target file / marker name / line range is correct or not, Importer should be able to add a support for imperatively running a single command to check the validity.

For example, with YAML definition of

# == import: some-data / begin from: ../../../some/dir/file.yaml#[some-marker] ==
# == import: some-data / end ==

The target file may be incorrect, and you'd only know when you run importer update.

Instead, Importer can add importer get and run it something like

importer get ' ../../../some/dir/file.yaml#[some-marker]'