Add frontend features with search, shortcodes, widgets, and blocks (v0.6.0)

- Room search with availability, capacity, room type, amenity, price range, and building filters
- AJAX-powered search with pagination and load more
- Shortcodes: [bnb_buildings], [bnb_rooms], [bnb_room_search], [bnb_building], [bnb_room]
- Widgets: Similar Rooms, Building Rooms, Availability Calendar
- Gutenberg blocks: Building, Room, Room Search, Buildings List, Rooms List
- Frontend CSS with responsive design and CSS custom properties
- Frontend JavaScript with SearchForm, CalendarWidget, AvailabilityForm, PriceCalculator

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

assets/css/blocks-editor.css

@@ -0,0 +1,86 @@
+/**
+ * WP BnB Block Editor Styles
+ *
+ * @package Magdev\WpBnb
+ */
+
+/* Block placeholder styling */
+.wp-bnb-block-placeholder {
+	padding: 20px;
+	background: #f0f0f0;
+	border: 2px dashed #ccc;
+	text-align: center;
+	color: #666;
+	border-radius: 4px;
+}
+
+/* Server-side render container */
+.wp-block-wp-bnb-building,
+.wp-block-wp-bnb-room,
+.wp-block-wp-bnb-room-search,
+.wp-block-wp-bnb-buildings,
+.wp-block-wp-bnb-rooms {
+	margin-bottom: 1em;
+}
+
+/* Placeholder in editor */
+.wp-block-wp-bnb-building .components-placeholder,
+.wp-block-wp-bnb-room .components-placeholder,
+.wp-block-wp-bnb-room-search .components-placeholder,
+.wp-block-wp-bnb-buildings .components-placeholder,
+.wp-block-wp-bnb-rooms .components-placeholder {
+	min-height: 150px;
+}
+
+/* Loading spinner container */
+.wp-block-wp-bnb-building .components-spinner,
+.wp-block-wp-bnb-room .components-spinner,
+.wp-block-wp-bnb-room-search .components-spinner,
+.wp-block-wp-bnb-buildings .components-spinner,
+.wp-block-wp-bnb-rooms .components-spinner {
+	margin: 0 auto;
+}
+
+/* Inspector control sections */
+.wp-block-wp-bnb-building .components-panel__body,
+.wp-block-wp-bnb-room .components-panel__body,
+.wp-block-wp-bnb-room-search .components-panel__body,
+.wp-block-wp-bnb-buildings .components-panel__body,
+.wp-block-wp-bnb-rooms .components-panel__body {
+	padding-bottom: 16px;
+}
+
+/* Select control styling */
+.wp-block-wp-bnb-building .components-select-control__input,
+.wp-block-wp-bnb-room .components-select-control__input,
+.wp-block-wp-bnb-room-search .components-select-control__input,
+.wp-block-wp-bnb-buildings .components-select-control__input,
+.wp-block-wp-bnb-rooms .components-select-control__input {
+	min-width: 200px;
+}
+
+/* Preview container in editor */
+.wp-bnb-editor-preview {
+	pointer-events: none;
+	opacity: 0.9;
+}
+
+/* Disable interactive elements in preview */
+.wp-bnb-editor-preview a,
+.wp-bnb-editor-preview button,
+.wp-bnb-editor-preview input,
+.wp-bnb-editor-preview select {
+	pointer-events: none;
+}
+
+/* Add visual indicator that this is a preview */
+.wp-bnb-editor-preview::after {
+	content: '';
+	position: absolute;
+	top: 0;
+	left: 0;
+	right: 0;
+	bottom: 0;
+	background: rgba(255, 255, 255, 0.1);
+	pointer-events: none;
+}