move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/tg/tl_contact_gen.go

@@ -0,0 +1,189 @@
+// Code generated by gotdgen, DO NOT EDIT.
+
+package tg
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"sort"
+	"strings"
+
+	"go.uber.org/multierr"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/bin"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tdjson"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tdp"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tgerr"
+)
+
+// No-op definition for keeping imports.
+var (
+	_ = bin.Buffer{}
+	_ = context.Background()
+	_ = fmt.Stringer(nil)
+	_ = strings.Builder{}
+	_ = errors.Is
+	_ = multierr.AppendInto
+	_ = sort.Ints
+	_ = tdp.Format
+	_ = tgerr.Error{}
+	_ = tdjson.Encoder{}
+)
+
+// Contact represents TL type `contact#145ade0b`.
+// A contact of the current user that is registered in the system.
+//
+// See https://core.telegram.org/constructor/contact for reference.
+type Contact struct {
+	// User identifier
+	UserID int64
+	// Current user is in the user's contact list
+	Mutual bool
+}
+
+// ContactTypeID is TL type id of Contact.
+const ContactTypeID = 0x145ade0b
+
+// Ensuring interfaces in compile-time for Contact.
+var (
+	_ bin.Encoder     = &Contact{}
+	_ bin.Decoder     = &Contact{}
+	_ bin.BareEncoder = &Contact{}
+	_ bin.BareDecoder = &Contact{}
+)
+
+func (c *Contact) Zero() bool {
+	if c == nil {
+		return true
+	}
+	if !(c.UserID == 0) {
+		return false
+	}
+	if !(c.Mutual == false) {
+		return false
+	}
+
+	return true
+}
+
+// String implements fmt.Stringer.
+func (c *Contact) String() string {
+	if c == nil {
+		return "Contact(nil)"
+	}
+	type Alias Contact
+	return fmt.Sprintf("Contact%+v", Alias(*c))
+}
+
+// FillFrom fills Contact from given interface.
+func (c *Contact) FillFrom(from interface {
+	GetUserID() (value int64)
+	GetMutual() (value bool)
+}) {
+	c.UserID = from.GetUserID()
+	c.Mutual = from.GetMutual()
+}
+
+// TypeID returns type id in TL schema.
+//
+// See https://core.telegram.org/mtproto/TL-tl#remarks.
+func (*Contact) TypeID() uint32 {
+	return ContactTypeID
+}
+
+// TypeName returns name of type in TL schema.
+func (*Contact) TypeName() string {
+	return "contact"
+}
+
+// TypeInfo returns info about TL type.
+func (c *Contact) TypeInfo() tdp.Type {
+	typ := tdp.Type{
+		Name: "contact",
+		ID:   ContactTypeID,
+	}
+	if c == nil {
+		typ.Null = true
+		return typ
+	}
+	typ.Fields = []tdp.Field{
+		{
+			Name:       "UserID",
+			SchemaName: "user_id",
+		},
+		{
+			Name:       "Mutual",
+			SchemaName: "mutual",
+		},
+	}
+	return typ
+}
+
+// Encode implements bin.Encoder.
+func (c *Contact) Encode(b *bin.Buffer) error {
+	if c == nil {
+		return fmt.Errorf("can't encode contact#145ade0b as nil")
+	}
+	b.PutID(ContactTypeID)
+	return c.EncodeBare(b)
+}
+
+// EncodeBare implements bin.BareEncoder.
+func (c *Contact) EncodeBare(b *bin.Buffer) error {
+	if c == nil {
+		return fmt.Errorf("can't encode contact#145ade0b as nil")
+	}
+	b.PutLong(c.UserID)
+	b.PutBool(c.Mutual)
+	return nil
+}
+
+// Decode implements bin.Decoder.
+func (c *Contact) Decode(b *bin.Buffer) error {
+	if c == nil {
+		return fmt.Errorf("can't decode contact#145ade0b to nil")
+	}
+	if err := b.ConsumeID(ContactTypeID); err != nil {
+		return fmt.Errorf("unable to decode contact#145ade0b: %w", err)
+	}
+	return c.DecodeBare(b)
+}
+
+// DecodeBare implements bin.BareDecoder.
+func (c *Contact) DecodeBare(b *bin.Buffer) error {
+	if c == nil {
+		return fmt.Errorf("can't decode contact#145ade0b to nil")
+	}
+	{
+		value, err := b.Long()
+		if err != nil {
+			return fmt.Errorf("unable to decode contact#145ade0b: field user_id: %w", err)
+		}
+		c.UserID = value
+	}
+	{
+		value, err := b.Bool()
+		if err != nil {
+			return fmt.Errorf("unable to decode contact#145ade0b: field mutual: %w", err)
+		}
+		c.Mutual = value
+	}
+	return nil
+}
+
+// GetUserID returns value of UserID field.
+func (c *Contact) GetUserID() (value int64) {
+	if c == nil {
+		return
+	}
+	return c.UserID
+}
+
+// GetMutual returns value of Mutual field.
+func (c *Contact) GetMutual() (value bool) {
+	if c == nil {
+		return
+	}
+	return c.Mutual
+}