Replace tmcrypto.PubKey by our own cryptotypes.PubKey (#7419)

* WIP on removing tm pub/privkey

* Fix part of crypto tests

* Add PrivKeyLedgerSecp256K1 proto type

* Use BasePrivKey for ledger priv key type

* Refacto continued

* First round

* x/staking

* Continue porting

* x/* done

* Make build pass

* More conversion

* Remove IntoTmPubKey

* Fix test

* Remove crypto.PubKey in some other places

* Revert ledger changes

* Fix comment

* Remove useless function

* Add To/FromTmPublicKey

* Add migrate tests

* Fix test

* Fix another test

* Rename tm conversion functions

* Less code

* Rename BasePrivKey to LedgerPrivKey

* Add changelog

* Rename functions

Co-authored-by: Amaury Martiny <amaury.martiny@protonmail.com>
Co-authored-by: Alessio Treglia <alessio@tendermint.com>

testutil/testdata/tx.go

@@ -3,14 +3,13 @@ package testdata
 import (
 	"encoding/json"
 
-	"github.com/tendermint/tendermint/crypto"
-
 	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 )
 
 // KeyTestPubAddr generates a new secp256k1 keypair.
-func KeyTestPubAddr() (crypto.PrivKey, crypto.PubKey, sdk.AccAddress) {
+func KeyTestPubAddr() (cryptotypes.PrivKey, cryptotypes.PubKey, sdk.AccAddress) {
 	key := secp256k1.GenPrivKey()
 	pub := key.PubKey()
 	addr := sdk.AccAddress(pub.Address())