FIX: Check memory allocation when loading font from memory

NEW: Added font glyph ranges option when loading ttf fonts (see imgui.GLYPH_RANGES_CYRILLIC etc)
NEW: Added imgui.add_input_characters() to add one or more UTF8 characters

Updated to support Defold 1.9.0

FIX: Removed debug prints

CHANGE: Updated to DearImGUI 1.89.9

BREAKING CHANGE: Removed individual style functions.
NEW: Added imgui.set_style() and imgui.get_style()

NEW: Added imgui.table_setup_scroll_freeze()

FIX: Add missing ImGuiCond_* constants to script_api. Thanks @BlackMATov

FIX: iOS and HTML5 support is working again with Defold 1.6.4

FIX: Fixed GL includes when building with Defold 1.6.4