Added setActivePet to API

eco-core/core-plugin/src/main/kotlin/com/willfp/ecopets/EcoPetsAPIImpl.kt

@@ -17,6 +17,10 @@ internal object EcoPetsAPIImpl : EcoPetsAPI {
 
     override fun getActivePet(player: OfflinePlayer): Pet? = player.activePet
 
+    override fun setActivePet(player: OfflinePlayer, pet: Pet?) {
+        player.activePet = pet
+    }
+
     override fun getPetLevel(player: OfflinePlayer, pet: Pet) = player.getPetLevel(pet)
 
     override fun givePetExperience(player: Player, pet: Pet, amount: Double) =

eco-core/core-plugin/src/main/kotlin/com/willfp/ecopets/api/EcoPetsAPI.kt

@@ -10,7 +10,7 @@ interface EcoPetsAPI {
      * Get if a player has a pet.
      *
      * @param player The player.
-     * @param pet    The pet.
+     * @param pet The pet.
      * @return If the player has the pet unlocked
      */
     fun hasPet(
@@ -28,11 +28,22 @@ interface EcoPetsAPI {
         player: OfflinePlayer
     ): Pet?
 
+    /**
+     * Set a player's active pet.
+     *
+     * @param player The player.
+     * @param pet The pet.
+     */
+    fun setActivePet(
+        player: OfflinePlayer,
+        pet: Pet?
+    )
+
     /**
      * Get a player's level of a certain pet.
      *
      * @param player The player.
-     * @param pet    The pet.
+     * @param pet The pet.
      * @return The level.
      */
     fun getPetLevel(
@@ -44,7 +55,7 @@ interface EcoPetsAPI {
      * Give pet experience to a player.
      *
      * @param player The player.
-     * @param pet    The pet.
+     * @param pet The pet.
      * @param amount The amount of experience to give.
      */
     fun givePetExperience(
@@ -56,9 +67,9 @@ interface EcoPetsAPI {
     /**
      * Give pet experience to a player.
      *
-     * @param player           The player.
-     * @param pet              The pet.
-     * @param amount           The amount of experience to give.
+     * @param player The player.
+     * @param pet The pet.
+     * @param amount The amount of experience to give.
      * @param applyMultipliers If multipliers should be applied.
      */
     fun givePetExperience(
@@ -69,10 +80,11 @@ interface EcoPetsAPI {
     )
 
     /**
-     * Get progress to next level between 0 and 1, where 0 is none and 1 is complete.
+     * Get progress to next level between 0 and 1, where 0 is none and 1 is
+     * complete.
      *
      * @param player The player.
-     * @param pet    The pet.
+     * @param pet The pet.
      * @return The progress.
      */
     fun getPetProgress(
@@ -84,7 +96,7 @@ interface EcoPetsAPI {
      * Get the experience required to advance to the next level.
      *
      * @param player The player.
-     * @param pet    The pet.
+     * @param pet The pet.
      * @return The experience required.
      */
     fun getPetXPRequired(
@@ -96,7 +108,7 @@ interface EcoPetsAPI {
      * Get experience to the next level.
      *
      * @param player The player.
-     * @param pet    The pet.
+     * @param pet The pet.
      * @return The experience.
      */
     fun getPetXP(