Adding new array functions (#7)

array_build is already released
array_sort, array_reverse, and array_agg pased CI and coderabbit and are awaiting review

Author: javier

src/grammar/functions.ts

@@ -9,12 +9,16 @@ export const functions: string[] = [
   "approx_percentile",
   "arg_max",
   "arg_min",
+  "array_agg",
   "array_avg",
+  "array_build",
   "array_count",
   "array_cum_sum",
   "array_max",
   "array_min",
   "array_position",
+  "array_reverse",
+  "array_sort",
   "array_stddev",
   "array_stddev_pop",
   "array_stddev_samp",