Specifying a columnType in Property decorator doesn't produce desired schema

Describe the bug I’m trying to create an entity number property that maps to a Postgres numeric column with a specific precision and scale. However specifying the columnType option in the @Property() decorator doesn’t seem to result in anything but int4.

To Reproduce Steps to reproduce the behavior:

1. Create an entity with the following property

@Property({ type: 'number', columnType: 'numeric(10, 2)', default: 0 })
	myAttribute: number = 0.00;

1. Run schemaGenerator.createSchema() and inspect the dump

Expected behavior The resulting sql builds a statement that includes the column definition as "my_attribute" numeric(10,2) not null default 0

Actual behavior The resulting sql builds a statement that includes the column definition as "my_attribute" int4 not null default 0

Versions

Dependency	Version
node	13.9.1
typescript	3.8.3
mikro-orm	3.5.1
pg	7.18.2

[B4nan]

Will release this later today.

[B4nan]

Can you try to add rename(options, 'columnType', 'columnTypes'); to EntitySchema.addProperty? Should be just about that.