pacconf: add page (#18467)

Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>
Co-authored-by: Lena Pastwa <126529524+acuteenvy@users.noreply.github.com>

pages/linux/pacconf.md

@@ -0,0 +1,28 @@
+# pacconf
+
+> Query and display pacman's configuration options, showing either the full configuration or specific directive values as parsed by pacman.
+> More information: <https://github.com/andrewgregory/pacutils/blob/master/doc/pacconf.pod>.
+
+- Show full parsed pacman configuration:
+
+`pacconf`
+
+- List configured repositories:
+
+`pacconf --repo-list`
+
+- Always show directive names even if only one directive is provided:
+
+`pacconf --verbose {{directive}}`
+
+- Display only first value of multi-value options:
+
+`pacconf --single`
+
+- Display help:
+
+`pacconf --help`
+
+- Display version:
+
+`pacconf --version`