Added Medium12/20/30/35 cTAU isolation WPs

This MR adds dedicated isolation WPs for the cTAU12M, cTAU20M, cTAU30M, and cTAU35M L1 items, in the context of ATR-28641. They're all set to the same value for now; the final tuning will be ready in the next weeks.

Aside from the implementation of the separate thresholds, two additional pending changes were introduced:

• The check for L <= M <= T in the isolation WPs was removed since the isolation performance is not easily comparable in terms of the cut values for the isolation and jTAUCoreScale parameters.
• The implementation of the isolation check in the HLT seeding and the L1Topo simulation was replaced with one that's analogous to the current L1Topo firmware implementation, where a specific isolation WP is checked for each item. Previously, an isolation number was set to the tightest isolation that passed for each RoI, similar to how the eTAUs and other eFEX RoIs are treated.

I attached the L1Menu json file to the Jira ticket.

Tagging @astruebi, @lidiaz, @gipezzul, @rgugel.