Add a way to get the name of the current platform.

Author: Darkhax

Common/src/main/java/net/darkhax/bookshelf/api/util/IPlatformHelper.java

@@ -111,4 +111,11 @@ default MutableComponent getModNameComponent(String modId) {
      * @return Are game tests currently enabled?
      */
     boolean isTestingEnvironment();
+
+    /**
+     * Gets the name of the platform.
+     *
+     * @return The name of the platform.
+     */
+    String getName();
 }

Fabric/src/main/java/net/darkhax/bookshelf/impl/util/PlatformHelperFabric.java

@@ -53,4 +53,10 @@ public boolean isTestingEnvironment() {
 
         return FabricGameTestHelper.ENABLED;
     }
+
+    @Override
+    public String getName() {
+
+        return "Fabric";
+    }
 }

Forge/src/main/java/net/darkhax/bookshelf/impl/util/PlatformHelperForge.java

@@ -55,4 +55,9 @@ public boolean isTestingEnvironment() {
 
         return ForgeGameTestHooks.isGametestEnabled();
     }
+
+    @Override
+    public String getName() {
+        return "Forge";
+    }
 }