signer module removed, since it's deprecated (#366)

Co-authored-by: Tomás Grüner <47506558+MegaRedHand@users.noreply.github.com>
Co-authored-by: Leandro Ferrigno <leanrafa@gmail.com>
Co-authored-by: afk <84330705+afkbyte@users.noreply.github.com>

signerv2/README.md

@@ -1,3 +1,59 @@
-# Signerv2
+# Signer v2
 
-TODO
+Signerv2 is a module for signing messages. It provides a simple and unified way to produce cryptographic signatures.
+Signers instantiated from this module is required to create some SDK transaction managers (see [`NewPrivateKeyWallet`](../chainio/clients/wallet/privatekey_wallet.go) and [`NewSimpleTxManager`](../chainio/txmgr/simple.go)/[`NewGeometricTxnManager`](../chainio/txmgr/geometric/geometric.go)).
+
+## Features
+
+- Sign messages using raw private keys
+- Sign messages using encrypted keystores
+- Sign messages using a remote signer (web3 or KMS)
+
+### Comparison to Old Signer
+
+In comparison to the old signer, Signerv2 offers:
+
+- New signing mechanisms
+- A simplified API for easier extension
+
+### Using SignerFromConfig
+
+SignerV2 introduces `SignerFromConfig`
+
+The `SignerFromConfig` function allows you to create a signer function based on a configuration.
+This configuration specifies whether to use a private key signer, a local keystore signer, or a remote web3 signer.
+
+```go
+package main
+
+import (
+    "github.com/Layr-Labs/eigensdk-go/signerv2"
+)
+
+func main() {
+    config := signerv2.Config{
+        // ...initialize your configuration...
+    }
+    chainID := // Set your chain ID
+    signerFn, signerAddr, err := signerv2.SignerFromConfig(config, chainID)
+    if err != nil {
+        // Handle error
+        return
+    }
+    // Use signerFn and signerAddr as needed
+}
+```
+
+Internally, `SignerFromConfig` calls different signer functions depending on the config it receives: `PrivateKeySignerFn`, `KeyStoreSignerFn`, or `Web3SignerFn`.
+Those functions are also available to users.
+
+### KMSSignerFn
+
+This module includes support for signing messages using a Key Management Service (KMS) key.  Use `KMSSignerFn` to create a signer for KMS-managed keys.
+
+## Upgrade from Signer (v1)
+
+`NewPrivateKeySigner` and `NewPrivateKeyFromKeystoreSigner` functions should be upgraded to use the new `SignerFromConfig` and a `Config` with a `PrivateKey`, or `KeystorePath` and `Password`, respectively.
+
+The functionality given by the `Signer` interface and `BasicSigner` type was redesigned into the [`wallet`](../chainio/clients/wallet) and [`txmgr`](../chainio/txmgr) modules.
+After generating a `SignerFn` as specified in ["UsingSignerFromConfig"](#using-signerfromconfig), you can generate a transaction manager via `NewPrivateKeyWallet` and `NewSimpleTxManager` (or `NewGeometricTxnManager` for geometric gas pricing)