Add yet-another-react-lightbox package and update .gitignore to exclude node_modules

frontend/node_modules/yaml/browser/dist/parse/cst-stringify.js

@@ -1,61 +0,0 @@
-/**
- * Stringify a CST document, token, or collection item
- *
- * Fair warning: This applies no validation whatsoever, and
- * simply concatenates the sources in their logical order.
- */
-const stringify = (cst) => 'type' in cst ? stringifyToken(cst) : stringifyItem(cst);
-function stringifyToken(token) {
-    switch (token.type) {
-        case 'block-scalar': {
-            let res = '';
-            for (const tok of token.props)
-                res += stringifyToken(tok);
-            return res + token.source;
-        }
-        case 'block-map':
-        case 'block-seq': {
-            let res = '';
-            for (const item of token.items)
-                res += stringifyItem(item);
-            return res;
-        }
-        case 'flow-collection': {
-            let res = token.start.source;
-            for (const item of token.items)
-                res += stringifyItem(item);
-            for (const st of token.end)
-                res += st.source;
-            return res;
-        }
-        case 'document': {
-            let res = stringifyItem(token);
-            if (token.end)
-                for (const st of token.end)
-                    res += st.source;
-            return res;
-        }
-        default: {
-            let res = token.source;
-            if ('end' in token && token.end)
-                for (const st of token.end)
-                    res += st.source;
-            return res;
-        }
-    }
-}
-function stringifyItem({ start, key, sep, value }) {
-    let res = '';
-    for (const st of start)
-        res += st.source;
-    if (key)
-        res += stringifyToken(key);
-    if (sep)
-        for (const st of sep)
-            res += st.source;
-    if (value)
-        res += stringifyToken(value);
-    return res;
-}
-
-export { stringify };