Added LinkTimeline and PreviewCard fetching by id

• Added:
- LinkTimeline and PreviewCard fetching by id

app/javascript/gabsocial/actions/links.js

@@ -0,0 +1,30 @@
+import api from '../api'
+
+export const LINK_FETCH_REQUEST = 'LINK_FETCH_REQUEST'
+export const LINK_FETCH_SUCCESS = 'LINK_FETCH_SUCCESS'
+export const LINK_FETCH_FAIL = 'LINK_FETCH_FAIL'
+
+export const fetchLinkCard = (cardId) => (dispatch, getState) => {
+  dispatch(fetchLinkCardRequest(cardId))
+
+  api(getState).get(`/api/v1/links/${cardId}`).then(({ data }) => {
+    dispatch(fetchLinkCardSuccess(data))
+  })
+  .catch((err) => dispatch(fetchLinkCardFail(err)))
+}
+
+export const fetchLinkCardRequest = (cardId) => ({
+  type: LINK_FETCH_REQUEST,
+  cardId,
+})
+
+export const fetchLinkCardSuccess = (card) => ({
+  type: LINK_FETCH_SUCCESS,
+  card,
+})
+
+export const fetchLinkCardFail = (error, cardId) => ({
+  type: LINK_FETCH_FAIL,
+  error,
+  cardId,
+})