org-element: Extract search option and application in "file"-type links
* lisp/org-element.el (org-element-link-type-is-file): New variable.
(org-element-link-parser): Extract search option and application in
"file"-type links.
* contrib/lisp/org-e-html.el (org-e-html-link): Remove components
extraction since this in now done in `org-element-link-parser'.
* contrib/lisp/org-e-odt.el: Remove components extraction since this
in now done in `org-element-link-parser'.
* contrib/lisp/org-e-texinfo.el (org-e-texinfo-link): Remove
components extraction since this in now done in
`org-element-link-parser'.
* contrib/lisp/org-e-latex.el (org-e-latex-link): Remove components
extraction since this in now done in `org-element-link-parser'.
* contrib/lisp/org-e-man.el (org-e-man-link): Remove components
extraction since this in now done in `org-element-link-parser'.
* contrib/lisp/org-e-groff.el (org-e-groff-link): Remove components
extraction since this in now done in `org-element-link-parser'.
* contrib/lisp/org-md.el (org-md-link): Remove components extraction
since this in now done in `org-element-link-parser'.
* testing/lisp/test-org-element.el: Add tests.