feat: added zathurarc to config

.config/zathura/zathurarc

+# copy selection to system clipboard
+set selection-clipboard clipboard
+
+# enable incremental search
+set incremental-search true
+
+map <C-+> zoom in
+map <C--> zoom out
+
+map [fullscreen] <C-+> zoom in
+map [fullscreen] <C--> zoom out
+
+# Open document in fit-width mode by default
+set adjust-open "best-fit"
+
+# One page per row by default
+set pages-per-row 1