Add ability to provide Civs with Humrats

[trapw0w]

Use:

[position, sides, value] call ALIVE_fnc_updateSectorHostility;

Value is a relative increment to existing hostility

// increase hostility at player's position for player's side

[getPos player, [side player], 20] call ALIVE_fnc_updateSectorHostility;

// decrease hostility at player's position for player's side

[getPos player, [side player], -20] call ALIVE_fnc_updateSectorHostility;```

to lower hostility once a Humanitarian Ration has been handed to a civ.

[trapw0w]

Giving a 30% chance on both Humanitarian Rations & Water to decrease sector hostility by -3. Tested giving humrats, need to fully implement water. This issue won't be closed until issue #41 is resolved.