Add Condition query types to root property filters

The earlier type (`Partial<TSchema>`) would allow queries for exact
matches, but didn't cover any of the richer query semantics such as
operators or searching arrays by value.

Previously, type tests covering the application of these richer query
types were spuriously passing because of a comparison to the BSON
`Document` type, which is `{ [key: string]: any }`. This change fixes
the bulk of test failures that were introduced by the parent commit.

Author: noahsilas

src/mongo_types.ts

@@ -66,7 +66,9 @@ export type WithoutId<TSchema> = Omit<TSchema, '_id'>;
 
 /** A MongoDB filter can be some portion of the schema or a set of operators @public */
 export type Filter<TSchema> =
-  | Partial<TSchema>
+  | Partial<{
+      [Property in keyof TSchema]: Condition<TSchema[Property]>;
+    }>
   | ({
       [Property in Join<NestedPaths<WithId<TSchema>>, '.'>]?: Condition<
         PropertyType<WithId<TSchema>, Property>