feat(core): expose inputs, outputs and ngContentSelectors on ComponentFactory. (#15214)

E.g. for a component like this:
```
@Component({
  template: ‘<ng-content select=“child”></ng-content>’
})
class MyComp {
  @Input(‘aInputName’)
  aInputProp: string;

  @Output(‘aEventName’)
  aOuputProp: EventEmitter<any>;
}
```

the `ComponentFactory` will now contain the following:
- `inputs = {aInputProp: ‘aInputName’}`
- `outputs = {aOutputProp: ‘aOutputName’}`
- `ngContentSelectors = [‘child’]`

packages/compiler/src/aot/compiler.ts

@@ -163,12 +163,27 @@ export class AotCompiler {
                 hostMeta, ngModule, [compMeta.type], null, fileSuffix, targetStatements)
             .viewClassVar;
     const compFactoryVar = componentFactoryName(compMeta.type.reference);
+    const inputsExprs: o.LiteralMapEntry[] = [];
+    for (let propName in compMeta.inputs) {
+      const templateName = compMeta.inputs[propName];
+      // Don't quote so that the key gets minified...
+      inputsExprs.push(new o.LiteralMapEntry(propName, o.literal(templateName), false));
+    }
+    const outputsExprs: o.LiteralMapEntry[] = [];
+    for (let propName in compMeta.outputs) {
+      const templateName = compMeta.outputs[propName];
+      // Don't quote so that the key gets minified...
+      outputsExprs.push(new o.LiteralMapEntry(propName, o.literal(templateName), false));
+    }
+
     targetStatements.push(
         o.variable(compFactoryVar)
             .set(o.importExpr(createIdentifier(Identifiers.createComponentFactory)).callFn([
-              o.literal(compMeta.selector),
-              o.importExpr(compMeta.type),
-              o.variable(hostViewFactoryVar),
+              o.literal(compMeta.selector), o.importExpr(compMeta.type),
+              o.variable(hostViewFactoryVar), new o.LiteralMapExpr(inputsExprs),
+              new o.LiteralMapExpr(outputsExprs),
+              o.literalArr(
+                  compMeta.template.ngContentSelectors.map(selector => o.literal(selector)))
             ]))
             .toDeclStmt(
                 o.importType(