feat: add AVIF support to PHP GD extension in Docker images

- Add libavif-dev package to both apache-bookworm and fpm-alpine Dockerfiles
- Configure GD extension with AVIF support
- Update VS Code spell check dictionary with relevant terms

Author: hussainweb

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+    "cSpell.words": [
+        "fastcgi",
+        "hussainweb"
+    ]
+}

php8/apache-bookworm/Dockerfile

@@ -22,6 +22,7 @@ RUN set -eux; \
 	\
 	apt-get update; \
 	apt-get install -y --no-install-recommends \
+		libavif-dev \
 		libbz2-dev \
 		libfreetype6-dev \
 		libicu-dev \
@@ -35,6 +36,7 @@ RUN set -eux; \
 	; \
 	\
 	docker-php-ext-configure gd \
+		--with-avif \
 		--with-freetype \
 		--with-jpeg=/usr \
 		--with-webp \

php8/fpm-alpine/Dockerfile

@@ -17,6 +17,7 @@ RUN set -eux; \
 		bzip2-dev \
 		coreutils \
 		freetype-dev \
+		libavif-dev \
 		libjpeg-turbo-dev \
 		libmemcached-dev \
 		libpng-dev \
@@ -31,6 +32,7 @@ RUN set -eux; \
 	; \
 	\
 	docker-php-ext-configure gd \
+		--with-avif \
 		--with-freetype \
 		--with-jpeg=/usr/include \
 		--with-webp \