Add new attribute :tracking: do Decision Record Template

[masc2023]

What

As proposed in https://github.com/eclipse-score/score/pull/3076/changes#diff-8b8c6f8a8c47ebe70d48c581917651630beb1a087ee6dad24ee1fc3409d511bf

New attribute tracking to be added to the Decision Recored

Acceptance Criteria (DoD)

New attribute available

[...]

:id: dec_rec__<arch|proc|strat|infra|int>__<slug>
:status: draft
:tracking: <GitHub issue URL, required once a Shepherd is confirmed>
:context: <One sentence: what situation or gap makes this proposal necessary?>
:decision: <One sentence: what is being proposed?>

[...]

How

See above

[qor-lb]

Part of eclipse-score/score#3061 & related to eclipse-score/score#3077

[MaximilianSoerenPollak]

This :tracking: attribute is optional right?

[masc2023]

This :tracking: attribute is optional right?

yes, this is the intention