[Feature] Add dpi-setting to command line for PNG export

[SiboVG]

When I export a large harness to PNG, the details become very blurred. It would be nice to be able to set the dpi for the PNG export as a command-line argument and/or as metadata.

[kvid]

See the suggested PR #379 that could be one possible future way to obtain this.

With the current version (or actually v0.3 or above), you can try adding something like this to your YAML input:

tweak:
  override:
    graph:
      dpi: "600"  # Override the default output DPI

See the syntax doc for an explanation.

[SiboVG]

See the suggested PR #379 that could be one possible future way to obtain this.

With the current version (or actually v0.3 or above), you can try adding something like this to your YAML input:

tweak: override: graph: dpi: "600" # Override the default output DPI

See the syntax doc for an explanation.

Great, thanks!