[CR] Replace environmental protection with seal integrity

[zachary-kaelan]

Summary

Infrastructure "Replace environmental protection with seal integrity"

Purpose of change

Environmental protection is currently essentially a magic number. All values involving it are hardcoded with no explanation as to how those values were chosen. When picking the value for armor or clothing, you have zero clue what the number you're setting even does.

A few examples:

• In iexamine::flower_poppy, you can only smell the flower if your env_resist is less than 10, and if it's less than 5 then you have a chance of falling asleep.
• Footwear only gives acid immunity if it has env_resist >= 15 on the legs and feet.
• If env_resist < 10 then resistances to acid and fire are multiplied by env_resist / 10.
• A few effects like flashbangs, boomer barf, and goo traps are rolled against env_resist through add_env_effect despite there being no relevance. Swim goggles do not have integrated windshield wipers.

Describe the solution

On armor or clothing the name is changed to seal_integrity with an enum type, like breathability on materials, and on bionics and body parts it is changed to innate_seal. All hardcoded values will be changed to use the enum. Flags like WATERPROOF and GAS_PROOF will become unnecessary.

Describe alternatives you've considered

Some complicated means of automatically determining a rough environmental protection value based on things like materials, thickness, other resistances, etc.

Testing

WIP.

Additional context

Relevant PRs and issues I found include #72010, #66297, #72271, #71964, and #74680.