feat: update simplified schema to sort the types by the most frequent first COMPASS-7139 (#209)

Author: Anemy

src/schema-analyzer.ts

@@ -293,7 +293,12 @@ export type SimplifiedSchema = {
 
 function simplifiedSchema(fields: SchemaAnalysisFieldsMap): SimplifiedSchema {
   function finalizeSchemaFieldTypes(types: SchemaAnalysisFieldTypes): SimplifiedSchemaType[] {
-    return Object.values(types).map((type) => {
+    return Object.values(types).sort(
+      (a: SchemaAnalysisType, b: SchemaAnalysisType) => {
+        // Sort the types by what occurs most frequent first.
+        return b.count - a.count;
+      }
+    ).map((type: SchemaAnalysisType) => {
       return {
         bsonType: type.bsonType, // Note: `Object` is replaced with `Document`.
         ...(isArrayType(type) ? {

test/simplified-schema.test.ts

@@ -7,11 +7,11 @@ import { allBSONTypesDoc } from './all-bson-types-fixture';
 const docsFixture = [
   {
     foo: 1,
-    bar: 'test'
+    bar: 25
   },
   {
     foo: 2,
-    bar: 25,
+    bar: 'test',
     baz: true
   },
   {