Add support for presets

presets/Default.txt

@@ -0,0 +1,5 @@
+do_sample=True,
+max_new_tokens=max_length,
+top_p=1,
+typical_p=0.3,
+temperature=temperature, 

presets/Verbose.txt

@@ -0,0 +1,10 @@
+num_beams=10,
+min_length=max_length,
+max_new_tokens=max_length,
+length_penalty =1.4,
+no_repeat_ngram_size=2,
+early_stopping=True,
+temperature=0.7,
+top_k=150,
+top_p=0.92,
+repetition_penalty=4.5,