misc: adding no_std feature to the README.MD [skip ci]

Author: WolverinDEV

README.MD

@@ -6,7 +6,8 @@
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-`bmatcher` is a flexible and efficient binary pattern matching library designed to help you search and match binary data.
+`bmatcher` is a flexible and efficient binary pattern matching library designed to help you search and match binary data. 
+It is `no_std` compatible by default, making it suitable for embedded, kernel, or hypervisor environments where standard library usage is restricted.
 
 ## Motivation