make guild ownership transfer

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https://api.github.com/yepcord/server/blob/29493aa4a0175c99903138a86245c3f92702b3e4/src/rest_api/routes/guilds.py#L41

from time import time

from quart import Blueprint, request
from quart_schema import validate_request

from ..models.guilds import GuildCreate, GuildUpdate, TemplateCreate, TemplateUpdate, EmojiCreate, EmojiUpdate, \
    ChannelsPositionsChangeList, ChannelCreate, BanMember, RoleCreate, RoleUpdate, \
    RolesPositionsChangeList, AddRoleMembers, MemberUpdate, SetVanityUrl, GuildCreateFromTemplate, GuildDelete
from ..utils import usingDB, getUser, multipleDecorators, getGuildWM, getGuildWoM, getGuildTemplate, getRole
from ...yepcord.classes.channel import Channel
from ...yepcord.classes.guild import Guild, Invite, AuditLogEntry, GuildTemplate, Emoji, Role
from ...yepcord.classes.message import Message
from ...yepcord.classes.user import User, GuildMember, UserId
from ...yepcord.ctx import getCore, getCDNStorage, Ctx
from ...yepcord.enums import GuildPermissions, AuditLogEntryType
from ...yepcord.errors import InvalidDataErr, Errors
from ...yepcord.snowflake import Snowflake
from ...yepcord.utils import c_json, getImage, b64decode

# Base path is /api/vX/guilds
guilds = Blueprint('guilds', __name__)

@guilds.post("/", strict_slashes=False)
@multipleDecorators(validate_request(GuildCreate), usingDB, getUser)
async def create_guild(data: GuildCreate, user: User):
    guild_id = Snowflake.makeId()
    if data.icon:
        img = getImage(data.icon)
        if h := await getCDNStorage().setGuildIconFromBytesIO(guild_id, img):
            data.icon = h
    guild = await getCore().createGuild(guild_id, user, **data.dict(exclude_defaults=True))
    Ctx["with_channels"] = True
    return c_json(await guild.json)

@guilds.patch("/<int:guild>")
@multipleDecorators(validate_request(GuildUpdate), usingDB, getUser, getGuildWM)
async def update_guild(data: GuildUpdate, user: User, guild: Guild, member: GuildMember):
    await member.checkPermission(GuildPermissions.MANAGE_GUILD)
    data.owner_id = None # TODO: make guild ownership transfer
    for image_type, func in (("icon", getCDNStorage().setGuildIconFromBytesIO), ("banner", getCDNStorage().setBannerFromBytesIO),
                             ("splash", getCDNStorage().setGuildSplashFromBytesIO)):
        if img := getattr(data, image_type):
            setattr(data, image_type, "")
            img = getImage(img)
            if h := await func(guild.id, img):
                setattr(data, image_type, h)
    for ch in ("afk_channel_id", "system_channel_id"):
        if (channel_id := getattr(data, ch)) is not None:
            if (channel := await getCore().getChannel(channel_id)) is None:
                setattr(data, ch, None)
            elif channel.guild_id != guild.id:
                setattr(data, ch, None)
    new_guild = guild.copy(**data.dict(exclude_defaults=True))
    await getCore().updateGuildDiff(guild, new_guild)
    await getCore().sendGuildUpdateEvent(new_guild)