fix: automatically load library when using loaderLookup

Author: ObserverOfTime

src/main/java/io/github/treesitter/jtreesitter/internal/ChainedLibraryLookup.java

@@ -28,8 +28,14 @@ private static SymbolLookup findLibrary(Arena arena) {
         try {
             var library = System.mapLibraryName("tree-sitter");
             return SymbolLookup.libraryLookup(library, arena);
-        } catch (IllegalArgumentException e) {
-            return SymbolLookup.loaderLookup();
+        } catch (IllegalArgumentException ex1) {
+            try {
+                System.loadLibrary("tree-sitter");
+                return SymbolLookup.loaderLookup();
+            } catch (UnsatisfiedLinkError ex2) {
+                ex1.addSuppressed(ex2);
+                throw ex1;
+            }
         }
     }
 }

src/main/java/io/github/treesitter/jtreesitter/package-info.java

@@ -43,10 +43,9 @@
  *     SymbolLookup.libraryLookup(String, Arena)}.
  * </li>
  * <li>
- *     The libraries can be loaded manually by calling
- *     {@link java.lang.System#loadLibrary(String) System.loadLibrary(String)},
- *     if the library is installed in {@systemProperty java.library.path},
- *     or {@link java.lang.System#load(String) System.load(String)}.
+ *     If the libraries are installed in {@systemProperty java.library.path} instead,
+ *     they will be loaded automatically by {@link java.lang.foreign.SymbolLookup#loaderLookup()
+ *     SymbolLookup.loaderLookup()}.
  * </li>
  * <li>
  *     The libraries can be loaded manually by registering a custom implementation of