Compilation of root document that contains an image reference fails if the root document is not in the current directory

[ronaldtse]

There is some Inkscape processing that fails due to the CWD directory being different from where the document root is.

We need to have something called the "Document.root" which can tell us where the document should be processed at, e.g. load images relative to that path.

Document:

• https://github.com/metanorma/mn-samples-bsi/tree/main/sources/pas-2030

For example:

$ cd mn-samples-bsi
$ cd sources/pas-2030
$ bundle exec metanorma pas-2030/document.adoc
...
** (org.inkscape.Inkscape:38969): WARNING **: 15:07:57.152: Can't open file: ~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-1.svg (doesn't exist)

** (org.inkscape.Inkscape:38969): WARNING **: 15:07:57.152: Can't open file: ~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-1.svg (doesn't exist)
ink_file_open: '~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-1.svg' cannot be opened!
InkscapeApplication::document_open: Failed to open: ~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-1.svg
ConcreteInkscapeApplication::on_open: failed to create document!
Image specified at `images/fig-1.emf` does not exist.

** (org.inkscape.Inkscape:39019): WARNING **: 15:07:57.725: Can't open file: ~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-a.1.svg (doesn't exist)

** (org.inkscape.Inkscape:39019): WARNING **: 15:07:57.725: Can't open file: ~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-a.1.svg (doesn't exist)
ink_file_open: '~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-a.1.svg' cannot be opened!
InkscapeApplication::document_open: Failed to open: ~/src/mn/mn-samples-bsi/sources/pas-2030/images/fig-a.1.svg
ConcreteInkscapeApplication::on_open: failed to create document!
Image specified at `images/fig-a.1.emf` does not exist.