feat: set display to block for shadow dom host components

Author: michaelbazos

src/app/core/footer/footer.component.scss

@@ -0,0 +1,3 @@
+:host {
+  display: block;
+}

src/app/core/header/header.component.scss

@@ -0,0 +1,3 @@
+:host {
+  display: block;
+}

src/app/movie/movie-list/movie-list.component.scss

@@ -0,0 +1,3 @@
+:host {
+  display: block;
+}