Mining tweaks (#18686)

So we have pickaxe, drill, crusher, and PKA (projectiles).
The tier list in terms of mining speed should go:
- PKA
- Crusher
- Pickaxe
- Drill

As a result:
- Nerfed PKA firerate to 0.5 and bumped damage (slight DPS nerf due to meta).
- Crusher bumped to 1 hit per second as PKA is still more common and also to make it better at mining.
- Pickaxe is 1 hit per second and also gets structural (fireaxe should still beat it by a little bit) so it's better to break stuff than crusher but worse in combat.
- Drill is 1.5 hits per second but otherwise weak.

Content.Server/Gatherable/Components/GatheringToolComponent.cs

@@ -1,38 +0,0 @@
-using System.Threading;
-using Content.Shared.Damage;
-using Robust.Shared.Audio;
-
-namespace Content.Server.Gatherable.Components
-{
-    /// <summary>
-    ///     When interacting with an <see cref="GatherableComponent"/> allows it to spawn entities.
-    /// </summary>
-    [RegisterComponent]
-    public sealed class GatheringToolComponent : Component
-    {
-        /// <summary>
-        ///     Sound that is made once you completed gathering
-        /// </summary>
-        [ViewVariables(VVAccess.ReadWrite)]
-        [DataField("sound")]
-        public SoundSpecifier GatheringSound { get; set; } = new SoundPathSpecifier("/Audio/Items/Mining/pickaxe.ogg");
-
-        /// <summary>
-        ///     What damage should be given to objects when
-        ///     gathered using this tool? (0 for infinite gathering)
-        /// </summary>
-        [DataField("damage", required: true)]
-        public DamageSpecifier Damage { get; set; } = default!;
-
-        /// <summary>
-        ///     How many entities can this tool gather from at once?
-        /// </summary>
-        [ViewVariables(VVAccess.ReadWrite)]
-        [DataField("maxEntities")]
-        public int MaxGatheringEntities = 1;
-
-        [ViewVariables]
-        [DataField("gatheringEntities")]
-        public readonly List<EntityUid> GatheringEntities = new();
-    }
-}