addFont

pub fn addFont(self: *Self, name: []const u8, ttf_bytes: []const u8, ttf_bytes_allocator: ?std.mem.Allocator) (std.mem.Allocator.Error || dvui.Font.Error)!void {
    try self.fonts.database.ensureUnusedCapacity(self.gpa, 1);
    // TODO: try to get this info from the ttf file, and also add override options
    const font: dvui.Font = .find(.{ .family = name });
    // Test if we can successfully open this font
    // TODO: Find some more elegant way of validating ttf files
    var entry = try dvui.Font.Cache.Entry.init(self.gpa, ttf_bytes, font);
    // Try and cache the entry since the work is already done
    self.fonts.cache.put(self.gpa, font.hash(), entry) catch entry.deinit(self.gpa, self.backend);
    self.fonts.database.appendAssumeCapacity(.{
        .family = dvui.Font.array(name),
        .bytes = ttf_bytes,
        .allocator = ttf_bytes_allocator,
    });
}