Add Options.builder() method to get the builder in a more "fluent" manner (#832)

* Add `Options#builder()` (Resolves #831)

* Rename builder method.

Co-authored-by: Scott Fauerbach <[email protected]>

Author: nwse

src/main/java/io/nats/client/Options.java

@@ -571,10 +571,19 @@ public Thread newThread(Runnable r) {
      * be created from a properties object using the property names defined with the
      * prefix PROP_ in this class.
      * 
-     * <p>{@code new Options.Builder().build()} is equivalent to calling {@link Nats#connect() Nats.connect()}.
+     * <p>{@code new Options.Builder().build()}}.
      * 
      * <p>A common usage for testing might be {@code new Options.Builder().server(myserverurl).noReconnect.build()}
      */
+
+    /**
+     * Creates a builder for the options.
+     * @return the builder.
+     */
+    public static Builder builder() {
+        return new Builder();
+    }
+
     public static class Builder {
 
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