Add the primary key type to typescript's TableRuntimeTypeInfo

[jsdt]

Description of Changes

The TableRuntimeTypeInfo that we have in the typescript SDK currently has the name of the primary key (if it exists), and the type of the rows. That is technically enough to figure out the AlgebraicType of the primary key with something like rowType.product.elements.find( (element: ProductTypeElement) => {element.name === primaryKey})?.algebraicType, but it's more convenient to have it generated for us.

This adds a field that looks like:

      primaryKeyInfo: {
        colName: "id",
        colType: Person.getTypeScriptAlgebraicType().product.elements[0].algebraicType,
      },

We are still generating primaryKey field, so we don't need to release a new TS SDK version and CLI version at the same time, but eventually we can get rid of it.

API and ABI breaking changes

This is just adding a field in generated typescript code, which shouldn't break anything.

Expected complexity level and risk

Testing

I've tested the current TS sdk with the newly generated code to ensure it doesn't break, and I'm working on a TS PR that will use the new field. I have enough of the new code working that I have tested the newly generated fields.

[bfops]

(I'm removing the codeowner reviewers since they're no longer codeowners for any changed files)

[cloutiertyler]

This LGTM. It's quite straightforward