refactor: Energy Rework

[KheirFerrum]

Checklist

Required

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax so it can be closed automatically.
• I have committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

Optional

• This is a C++ PR that modifies JSON loading or behavior.
  • I have documented the changes in the appropriate location in the doc/ folder.
  • If documentation for this feature does not exist, please write it or at least note its lack in PR description.
  • New localizable fields need to be added to the lang/bn_extract_json_strings.sh script if it does not support them yet.
  • If applicable, add checks on game load that would validate the loaded data.
  • If it modifies format of save files, please add migration from the old format.

Purpose of change

Basically, make batteries use discrete charges in the form of units::energy instead of charges, which will allow us to make power_draw behaviour less cursed and in general make code that handles power more reliable.

Describe the solution

There's a lot to write down here, I'm mostly past the early hurdles, and will now put down checkboxes for myself to tick off as I go to make sure I don't forget things.

• Convert all batteries to battery type items. Make battery type items accept units::energy charges, convert most tools to do the same.
  • Make it so that max energy returns 0_kJ if the item is not meant to contain power, avoid the situation with charges where items can gain charges to infinity.
  • Write code for battery adaptors.
  • Figure out if I want this to be a consideration in magazine_integral(), I don't think so, but it's important I give this thought once the project is fully structured.
• Convert iuse and iuse_actor to return the appropriate charge and power pair so the game knows how much of either to use from an item.
  • Update all the activities to use charges/power as appropriate.
• Update recipes to appropriately use energy from tools.
• Check that the grid functions correctly.

Describe alternatives you've considered

• Keeping our shitty power_draw code
  • Tempting, and if I am not able to complete this within the next 2 weeks, likely.

Testing

Additional context

[chaosvolt]

Removing this will if I recall let you turn it on even when it has zero power? Unless 1 is a default in the code already.

[KheirFerrum]

Necessary while I'm testing, since batteries don't have charges in the rework. There's not a whole lot of point in reviewing my work at this stage, it's very preliminary.

[chaosvolt]

Ah, aight. Hope it goes well then. :D

[autofix-ci]

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