Reusable code for component efficiencies

[kylecarow]

Part of #287

Merge first, or rebase this branch:

1. Unlink PyO3 versions between FASTSim-2 and FASTSim-3 #265
2. F3/docs/demos #267

Creates reusable code to implement on types like RESEfficiency that check range of data, interpolated point result, and delegate to underlying interpolator appropriately. Avoids a lot of repeated boilerplate for efficiency enums.

Renames EffInterp, so this has implications for downstream Rust projects. Since we are bumping to 3.1.0 soon, I dont have a problem with this - we should suggest downstream project Rust users pin to a minor version:

[dependencies]
fastsim-core = "~3.1.0"  # Allows 3.1.0, 3.1.1, etc., but never 3.2.0

in this way we can keep the major version 3 and leave breaking changes to increments of minor versions, rather than making a million major versions.

Whereas before this would have a lot of matching code to call underlying interpolators:

#[derive(Clone, Debug, Deserialize, Serialize, PartialEq, IsVariant, TryInto)]
/// Determines what [ReversibleEnergyStorage] state variables to use in calculating efficiency
pub enum RESEfficiency {
    /// Efficiency is constant
    Constant(Interp0D<f64>),
    /// Efficiency = f(C-rate)
    CRate(Interp1DOwned<f64, strategy::enums::Strategy1DEnum>),
    /// Efficiency = f(C-rate, soc, temperature)
    CRateSOCTemperature(Interp3DOwned<f64, strategy::enums::Strategy3DEnum>),
    /// Efficiency = f(C-rate, temperature)
    CRateTemperature(Interp2DOwned<f64, strategy::enums::Strategy2DEnum>),
    /// Efficiency = f(C-rate, soc)
    CRateSOC(Interp2DOwned<f64, strategy::enums::Strategy2DEnum>),
    // TODO: finish adding possible variants
}

It now only needs this to implement interpolator methods, which have extra validation code and delegate to the contained interpolator. All other min/max/etc methods are implemented by this automatically too.

impl_efficiency_enum!(RESEfficiency {
    Constant,
    CRate,
    CRateSOCTemperature,
    CRateTemperature,
    CRateSOC,
});

This will make it easier to make e.g. FCEfficiency, EMEfficiency types.