Dynamic Temperature HF loader support (#5174)

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Co-authored-by: oobabooga <112222186+oobabooga@users.noreply.github.com>

extensions/dynatemp_with_range/README.md

@@ -0,0 +1,17 @@
+# dynatemp_with_range
+
+This extension makes it possible to set the minimum and maximum temperatures for dynamic temperature explicitly.
+
+For instance, you can directly set
+
+```
+min_T = 0.1
+max_T = 3
+```
+
+instead of having to convert that to
+
+```
+T = 1.55
+dynatemp = 1.45
+```