Add mod parsing support for 3.26 Vile Bastion

[Ariacell]

Description of the problem being solved:

Implements support for the upcoming custom mod on the new version of Vile Bastion in 3.26: ESRegen/sec was already supported, but es per spell block was not (at least that I found)

Hope the flag name is okay, could also be changed from MaximumEnergyShieldIncreasedByChanceToBlockSpellDamage -> EnergyShieldIncreasedByChanceToBlockSpellDamage if preferred!

Steps taken to verify a working solution:

• Validated with 0 intelligence character that energy shield is correctly impacted by the custom mod with both item based es and custom config es/spell block mods
• Checked for no crashed in the calcs breakdown section to confirm the source is mapped correctly
• Added unit tests for the calculation based on the baseline build with 75% spell block cap

Link to a build that showcases this PR:

https://pobb.in/MbdcjsAu3trY

Before screenshot:

With 50% spell block staff and 100 ES boots (as per linked build)

After screenshot:

With 50% spell block staff and 100 ES boots (as per linked build)