mech air overhaul (#19140)

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Server/Mech/Components/MechAirIntakeComponent.cs

@@ -0,0 +1,28 @@
+using Content.Shared.Atmos;
+
+namespace Content.Server.Mech.Components;
+
+/// <summary>
+/// This is basically a siphon vent for mech but not using pump vent component because MechAir bad
+/// </summary>
+[RegisterComponent]
+public sealed class MechAirIntakeComponent : Component
+{
+    /// <summary>
+    /// Target pressure change for a single atmos tick
+    /// </summary>
+    [DataField("targetPressureChange")]
+    public float TargetPressureChange = 5f;
+
+    /// <summary>
+    /// How strong the intake pump is, it will be able to replenish air from lower pressure areas.
+    /// </summary>
+    [DataField("pumpPower")]
+    public float PumpPower = 2f;
+
+    /// <summary>
+    /// Pressure to intake gases up to, maintains MechAir pressure.
+    /// </summary>
+    [DataField("pressure")]
+    public float Pressure = Atmospherics.OneAtmosphere;
+}