Drop requirement on Architectury API

[MattSturgeon]

Motivation

Fewer dependencies tied to minecraft versions/platforms makes it easier to support new/different mc versions without relying on others to do so first.

Although this means we have to manually use the various platform APIs we target, this isn't actually a big deal in our case, since we use very few APIs:

• Tick events
• Init event
• Keybind registration

Using the APIs directly may also give us more control.

Implementation

• Cherry-picked the event handler refactoring from General cleanup; keypress handling; tripod storage; FreecamPosition #126
• Removed the Architectury API dependency from gradle config
• Implemented Fabric API calls
• Implemented Forge event handlers
• Refactored the mod's keybinding declaration (see below)

Key bindings

Previously, keybinds were stored as discrete fields on the main Freecam class. This meant having to construct a separate List (or stream) in order to iterate over them when registering.

Rather than maintain a list of keybinds twice, which would be tedious and prone to error, I've introduced the ModBindings enum in the config package.

This has several advantages:

• We automatically get a list of all our key binds via Enum::values
• We can make declarations more readable using a custom constructor
• We can (more easily) construct the keybinds lazily, ensuring they aren't added to KeyBinding's maps until we're ready to register them.

To minimize boilerplate elsewhere I've wrapped the isPressed() and wasPressed() methods. We could also introduce our own wasPressedReset() to improve handler code, e.g:

public boolean wasPressedReset() {
    if (wasPressed()) {
        // Alternatively, use AW to access KeyBinding::reset
        // get().reset();
        while (wasPressed()) {}
        return true;
    }
    return false;
}

[hashalite]

Thank you sir!