cpan: add page (#14267)

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/common/cpan.md

@@ -0,0 +1,20 @@
+# cpan
+
+> Query, download and build perl modules from CPAN sites.
+> More information: <https://manned.org/cpan>.
+
+- Install a module (`-i` is optional):
+
+`cpan {{-i}} {{module_name}}`
+
+- Force install a module (`-i` is not optional):
+
+`cpan -fi {{module_name}}`
+
+- Upgrade all installed modules:
+
+`cpan -u`
+
+- Recompile modules:
+
+`cpan -r`