Added sorting, started on paging

src/enums/milestone.ts

@@ -2,7 +2,9 @@ export enum Milestone {
   Cohort = 'cohort',
   Year = 'year',
   County = 'mcode',
+  CountyLabel = 'county',
   School = 'lcode',
+  SchoolLabel = 'school',
   Grade = 'grade',
   ELACount = 'ecount',
   ELAMean = 'emean',

src/enums/sort.ts

@@ -0,0 +1,5 @@
+export enum SORT {
+  NONE = 'none',
+  ASC = 'asc',
+  DSC = 'dsc',
+}