Allow both using both tiebreaker types (e.g., min-fill, max-fill) and path metrics as tiebreakers

[italobusi]

The tiebreaker-type is an identityrefwith base path-metric-type and not with base path-tiebreaker-type

[italobusi]

2024-02-09 TE Call

The list of tiebreakers should include both tiebreaker types as well as path metric types

• [ ] @italobusi : send via e-mail a proposal on how to address this issue

[italobusi]

Superseded by: https://github.com/tsaad-dev/te/issues/263#issuecomment-1949206735