docs(inject-inputs): add injectInputs

docs/src/content/docs/utilities/Injectors/inject-inputs.md

@@ -0,0 +1,29 @@
+---
+title: injectInputs
+description: ngxtension/inject-inputs
+entryPoint: inject-inputs
+badge: stable
+contributors: ['chau-tran']
+---
+
+`injectInputs` is a utility function that provides a reactive signal for all Signal Inputs in a Directive or Component as an object. This is useful for tracking the state of all Inputs in a component or directive without having to create the `computed` manually.
+
+```ts
+import { injectInputs } from 'ngxtension/inject-inputs';
+```
+
+## Usage
+
+```ts
+@Component({ standalone: true, template: '' })
+class Foo {
+	foo = input(1);
+	bar = input('');
+
+	inputs = injectInputs(this, Foo);
+
+	constructor() {
+		console.log(this.inputs()); // { foo: 1, bar: '' }
+	}
+}
+```