refactor(home): rename HomepageWidgetBlueprint to HomePageWidgetBlueprint

Align naming convention with HomePageLayoutBlueprint and the catalog
plugin's consistent entity- prefix pattern. Also update the kind string
from 'home-widget' to 'home-page-widget' to match 'home-page-layout'.
Added interface-level JSDoc to HomePageWidgetBlueprintParams.
Signed-off-by: Adam Kunicki <kunickiaj@gmail.com>

plugins/home/README.md

@@ -114,17 +114,17 @@ app:
 
 Homepage widgets are React components that can be added to customizable home pages. The **key difference** between the new frontend system and legacy system is how these widget components are **registered and exported**:
 
-- **New Frontend System**: Use `HomepageWidgetBlueprint` to register widgets as extensions
+- **New Frontend System**: Use `HomePageWidgetBlueprint` to register widgets as extensions
 - **Legacy System**: Use `createCardExtension` to export widgets as card components
 
 ### New Frontend System
 
-Create widgets using the `HomepageWidgetBlueprint`:
+Create widgets using the `HomePageWidgetBlueprint`:
 
 ```ts
-import { HomepageWidgetBlueprint } from '@backstage/plugin-home-react/alpha';
+import { HomePageWidgetBlueprint } from '@backstage/plugin-home-react/alpha';
 
-const myWidget = HomepageWidgetBlueprint.make({
+const myWidget = HomePageWidgetBlueprint.make({
   name: 'my-widget',
   params: {
     name: 'MyWidget',

plugins/home/dev/index.tsx

@@ -28,7 +28,7 @@ import {
   createFrontendModule,
 } from '@backstage/frontend-plugin-api';
 import {
-  HomepageWidgetBlueprint,
+  HomePageWidgetBlueprint,
   HomePageLayoutBlueprint,
 } from '@backstage/plugin-home-react/alpha';
 import { HeaderWorldClock, WelcomeTitle, type ClockConfig } from '../src';
@@ -102,7 +102,7 @@ const homePageLayout = HomePageLayoutBlueprint.make({
   },
 });
 
-const homePageToolkitWidget = HomepageWidgetBlueprint.make({
+const homePageToolkitWidget = HomePageWidgetBlueprint.make({
   name: 'home-toolkit',
   params: {
     name: 'HomePageToolkit',
@@ -124,7 +124,7 @@ const homePageToolkitWidget = HomepageWidgetBlueprint.make({
   },
 });
 
-const homePageStarredEntitiesWidget = HomepageWidgetBlueprint.make({
+const homePageStarredEntitiesWidget = HomePageWidgetBlueprint.make({
   name: 'home-starred-entities',
   params: {
     name: 'HomePageStarredEntities',
@@ -136,7 +136,7 @@ const homePageStarredEntitiesWidget = HomepageWidgetBlueprint.make({
   },
 });
 
-const homePageRandomJokeWidget = HomepageWidgetBlueprint.make({
+const homePageRandomJokeWidget = HomePageWidgetBlueprint.make({
   name: 'home-random-joke',
   params: {
     name: 'HomePageRandomJoke',