Shot cfg format

[PieterVdc]

No description provided.

[Copilot]

Pull request overview

This PR updates the “shot” configuration format/parsing to use the generic named-field parser and consolidates several per-shot boolean settings into ShotModelFlags, alongside updating magic.cfg to use named (string) logic identifiers.

Changes:

• Migrates shot parsing from the bespoke parse_magic_shot_blocks() implementation to parse_named_field_blocks() using a new magic_shot_named_fields_set.
• Moves no_air_damage, wind_immune, fixed_damage, and hidden_projectile into ShotConfigStats::model_flags (new ShMF_* bits) and updates gameplay code to read from flags.
• Updates config/fxdata/magic.cfg to use named values (e.g., Default, Beam, Lightning) for FireLogic/UpdateLogic.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/thing_traps.c	Switches fixed-damage behavior check to ShMF_FixedDamage.
src/thing_shots.c	Uses new ShMF_* flags for air-damage, wind immunity, and hidden projectile; adds a direct include for shot flag definitions.
src/thing_creature.c	Switches fixed-damage behavior check to ShMF_FixedDamage.
src/config_magic.h	Adds new ShMF_* bits; removes legacy per-shot boolean fields; updates hit-effect model type.
src/config_magic.c	Replaces legacy shot parser with named-field parsing; introduces named commands for properties/withstand/logics.
config/fxdata/magic.cfg	Updates shot logic fields from numeric IDs to named strings.

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