feat : add samecase sunject

subjects/samecase/REDME.md

@@ -0,0 +1,26 @@
+## Same-Case 
+
+### Instructions
+
+Write a program that takes 2 arguments and returns:
+
+- If either of the characters is not a letter, return -1
+- If both characters are the same case, return 1
+- If both characters are letters, but not the same case, return 0
+- All outputs should be followed by a new-line character
+  
+### Usage
+
+
+
+```console
+$ go run . "p" "w"| cat -e
+1$
+$ go run . "p" "Q" | cat -e
+0$
+$go run . "p" "4"  | cat -e
+-1$
+$ go run . "P" "Q" "W" | cat -e
+$
+
+```