Part 1: Implement Accounts-V2 New, Wallet Creation (#6451)

* begin accounts-v2 new

* password validation

* validator accounts new with eip-2335 keystore

* select different wallet type based on enum

* clean up code significantly

* more robust code structure

* check if wallet exists

* define read and create wallet methods

* fmt

* go mod and comment

* comment

* redundant name

* satify gofmt

* add instructions with keymanager opts

* wrap up create and read wallet functionality

* prep for readiness

* doc improvements

* tests for create and read wallet

* update deps

* tidy

* visibility

* gaz

* fix up

* refactor for proper usage, with wallet and keymanager ifaces

* Update validator/flags/flags.go

Co-authored-by: Ivan Martinez <ivanthegreatdev@gmail.com>

* import

* improve structure

* wrap up all comments

* simplify

* lint

* Update validator/accounts/v2/cmd.go

* viz check

* add interface methods as needed

* fix build

* lint

* nishant feedback

* simplify structure

* add tests for strong password check

* all feedback done

* ivan feedback

* ivan feedback

Co-authored-by: Ivan Martinez <ivanthegreatdev@gmail.com>
Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

go.mod

@@ -65,11 +65,13 @@ require (
 	github.com/libp2p/go-libp2p-tls v0.1.4-0.20200421131144-8a8ad624a291 // indirect
 	github.com/libp2p/go-libp2p-yamux v0.2.8 // indirect
 	github.com/libp2p/go-maddr-filter v0.1.0 // indirect
+	github.com/manifoldco/promptui v0.7.0
 	github.com/minio/highwayhash v1.0.0
 	github.com/minio/sha256-simd v0.1.1
 	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826
 	github.com/multiformats/go-multiaddr v0.2.2
 	github.com/multiformats/go-multiaddr-net v0.1.5
+	github.com/nbutton23/zxcvbn-go v0.0.0-20180912185939-ae427f1e4c1d
 	github.com/olekukonko/tablewriter v0.0.4 // indirect
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/paulbellamy/ratecounter v0.2.0