Add preset for exports

export_presets.cfg

@@ -0,0 +1,34 @@
+[preset.0]
+
+name="HTML5"
+platform="HTML5"
+runnable=true
+custom_features=""
+export_filter="all_resources"
+include_filter=""
+exclude_filter=""
+export_path="build/index.html"
+script_export_mode=1
+script_encryption_key=""
+
+[preset.0.options]
+
+custom_template/debug=""
+custom_template/release=""
+variant/export_type=0
+vram_texture_compression/for_desktop=true
+vram_texture_compression/for_mobile=false
+html/export_icon=true
+html/custom_html_shell=""
+html/head_include=""
+html/canvas_resize_policy=2
+html/focus_canvas_on_start=true
+html/experimental_virtual_keyboard=false
+progressive_web_app/enabled=false
+progressive_web_app/offline_page=""
+progressive_web_app/display=1
+progressive_web_app/orientation=0
+progressive_web_app/icon_144x144=""
+progressive_web_app/icon_180x180=""
+progressive_web_app/icon_512x512=""
+progressive_web_app/background_color=Color( 0, 0, 0, 1 )