Revert "oc: Remove spurious `provide'"

This reverts commit ad006e2930.

lisp/oc-basic.el

@@ -762,4 +762,5 @@ Raise an error when no bibliography is set in the buffer."
     (("nil") ("bare" "b") ("bare-caps" "bc") ("caps" "c"))))
 
 (provide 'org-cite-basic)
+(provide 'oc-basic)
 ;;; oc-default.el ends here

lisp/oc-biblatex.el

@@ -308,4 +308,5 @@ to the document, and set styles."
     (("nil") ("bare" "b") ("caps" "c") ("bare-caps" "bc"))))
 
 (provide 'org-cite-biblatex)
+(provide 'oc-biblatex)
 ;;; oc-biblatex.el ends here

lisp/oc-csl.el

@@ -604,4 +604,5 @@ property list."
     (("nil") ("bare" "b") ("bare-caps" "bc") ("caps" "c"))))
 
 (provide 'org-cite-csl)
+(provide 'oc-csl)
 ;;; oc-citeproc.el ends here

lisp/oc-natbib.el

@@ -185,4 +185,5 @@ OUTPUT is the final output of the export process."
      ("bare-full" "bf") ("caps-full" "cf") ("bare-caps-full" "bcf"))))
 
 (provide 'org-cite-natbib)
+(provide 'oc-natbib)
 ;;; oc-natbib.el ends here

lisp/oc.el

@@ -1565,4 +1565,5 @@ ARG is the prefix argument received when calling interactively the function."
           (user-error "Cannot insert a citation here"))))))))
 
 (provide 'org-cite)
+(provide 'oc)
 ;;; oc.el ends here