Add per-toc styling to Timetable and train detail

src/lib/stores/tocMap.js

@@ -0,0 +1,40 @@
+const tocMap = {
+  gw: 'Great Western Railway',
+  sw: 'South Western Railway',
+  id: 'Island Line',
+  nt: 'Northern',
+  aw: 'Transport for Wales',
+  cc: 'c2c',
+  cs: 'Caledonian Sleeper',
+  ch: 'Chiltern Railways',
+  xc: 'CrossCountry',
+  em: 'East Midlands Railway',
+  es: 'Eurostar',
+  ht: 'Hull Trains',
+  tl: 'Thameslink',
+  gc: 'Grand Central',
+  hx: 'Heathrow Express',
+  ls: 'Locomotive Services Limited',
+  me: 'Merseyrail',
+  lr: 'Network Rail OTM',
+  xr: 'TfL Elizabeth Line',
+  se: 'SouthEastern',
+  sn: 'Southern',
+  le: 'Greater Anglia',
+  lm: 'West Midlands Railway',
+  sr: 'ScotRail',
+  gn: 'Great Northern',
+  lt: 'TfL London Underground',
+  lo: 'TfL London Overground',
+  sj: 'Sheffield SuperTram',
+  tp: 'TransPennine Express',
+  vt: 'Avanti West Coast',
+  gr: 'LNER',
+  wc: 'West Coast Railway',
+  ty: 'Vintage Trains',
+  ld: 'Lumo',
+  so: 'Rail Adventure',
+  ln: 'Grand Union Trains'
+};
+
+export default tocMap;