clean up type inferencing (#2332)

* unit tests for 64 bit conversion

* clean up type handling

* type inference tests

* more type inference fixes

* use schema to determine user intent for data typing

* stop using deprecated API

* fbs type encoding test

* add missing test

* add more tests

* correctly infer X type for CXG adaptor

* lint

* fix typo

* ts migration

* cleanup from PR review

* lint

* PR review changes

client/src/annoMatrix/schema.ts

@@ -73,6 +73,14 @@ export function _isContinuousType(schema) {
 
 // @ts-expect-error ts-migrate(7006) FIXME: Parameter 'colSchema' implicitly has an 'any' type... Remove this comment to see the full error message
 export function _normalizeCategoricalSchema(colSchema, col) {
+  /*
+  Ensure all enum schema types have a categories array, that
+  the categories array contains all unique values in the data
+  array, AND that the array is sorted.
+
+  Note that the back-end will not always set this hint, so we
+  must assume it may be incorrect and/or missing.
+  */
   const { type, writable } = colSchema;
   if (
     type === "string" ||