Add world access helpers.

Currently only has `BlockHitResult.blockStateBy` and `BlockHitResult.blockEntityBy`.

platform/fabric/src/main/kotlin/br/com/gamemods/minecity/fabric/helpers/WorldAccess.kt

@@ -0,0 +1,31 @@
+package br.com.gamemods.minecity.fabric.helpers
+
+import net.minecraft.block.BlockState
+import net.minecraft.block.entity.BlockEntity
+import net.minecraft.util.hit.BlockHitResult
+import net.minecraft.world.World
+
+/**
+ * Gets a [BlockState] from a [BlockHitResult] by accessing a [World]
+ *
+ * You *should* have a reference to a world on which this [BlockHitResult] was queried.
+ *
+ * **Trivial**: This is a mere convenience extension function.
+ * @param world The world being queried.
+ * @author alikindsys
+ */
+fun BlockHitResult.blockStateBy(world: World) : BlockState {
+    return world.getBlockState(this.blockPos)
+}
+
+/**
+ * Gets a [BlockEntity] from a [BlockHitResult] by accessing a [World]
+ *
+ * You *should* have a reference to a world on which this [BlockHitResult] was queried.
+ *
+ * **Trivial**: This is a mere convenience extension function.
+ * @param world The world being queried.
+ * @author alikindsys
+ */fun BlockHitResult.blockEntityBy(world: World) : BlockEntity? {
+    return world.getBlockEntity(this.blockPos)
+}