peco: add page (#6120)

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>

pages/common/peco.md

@@ -0,0 +1,16 @@
+# peco
+
+> Interactive filtering tool.
+> More information: <https://github.com/peco/peco>.
+
+- Start peco on all files in the specified directory:
+
+`find {{path/to/directory}} -type f | peco`
+
+- Start peco for running processes:
+
+`ps aux | peco`
+
+- Start peco with a specified query:
+
+`peco --query "{{query}}"`