[build] Use local .deps directory for users (fix #4998)

For an user setup we'd prefer to download Skia inside a .deps
directory (just to simplify the setup). For developers it's better if
we offer a common/shared/absolute directory so different local
Aseprite clones can share the same downloaded Skia version.

Co-authored-by: David Capello <david@igara.com>

.gitignore

@@ -16,4 +16,5 @@
 tests/_test*
 build
 .build
+.deps
 CMakeSettings.json

build.sh

@@ -369,6 +369,15 @@ if [ ! -f "$pwd/.build/$file_skia_dir" ] ; then
         skia_dir="$HOME/deps/$possible_skia_dir_name"
     fi
 
+    # Set default location if not found
+    if [ ! -d "$skia_dir" ] ; then
+        # Use .deps directory to download Skia for users (which is a
+        # simple setup). In case of developers we'd prefer the shared
+        # directory by default.
+        if [ "$userkind" == "user" ] ; then
+            skia_dir="$pwd/.deps/$possible_skia_dir_name"
+        fi
+
         if [ ! -d "$skia_dir" ] ; then
             echo ""
             echo "Skia directory wasn't found."
@@ -383,6 +392,7 @@ if [ ! -f "$pwd/.build/$file_skia_dir" ] ; then
             fi
             mkdir -p $skia_dir || exit 1
         fi
+    fi
     echo $skia_dir > "$pwd/.build/$file_skia_dir"
 fi
 skia_dir=$(echo -n $(cat $pwd/.build/$file_skia_dir))