Change Eagle file importer to use a two pass import. The first pass
parses the entire Eagle file into an associated E* object. The second
pass converts the parsed E* objects into the appropriate KiCad objects.
Improve handling of Eagle versioned libraries.
Add helpers to IO_BASE to ease handling of PROGRESS_REPORTER and REPORTER
objects.
ADDED: Support for importing Eagle schematic modules.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/1813
This does not fix all field visibility and position issues. This is due
to LIB_SYMBOL objects not supporting per unit field properties. The
current Eagle importer sets multiple unit symbol field properties to the
last unit parsed in the Eagle schematic file. The upcoming two pass
importer will resolve this issue.
The IO_RELEASER is a thin-wrapper around a std::unique_ptr, but done
this way to allow easier addition of a custom deleter in the future if
something needs to call back into the IO_MGR.