rfetch: add page (#8517)

rfetch.md

@@ -0,0 +1,32 @@
+# rfetch
+
+> A configurable fetch program to output system information.
+> More information: <https://github.com/kamui-fin/rfetch>.
+
+- Display system information:
+
+`rfetch`
+
+- Display system [a]rchitecture:
+
+`rfetch -a`
+
+- Display system up[t]ime:
+
+`rfetch -t`
+
+- Display system [k]ernel:
+
+`rfetch -k`
+
+- Display system [c]PU:
+
+`rfetch -c`
+
+- Display Linux [D]istro:
+
+`rfetch -D`
+
+- View [d]esktop environment:
+
+`rfetch -d`