Update V2 initialize voting to mirror V1 behaviour

[thomaspanf]

rp p iv allows users to choose if they want to specify a delegate while initializing voting: InitializeVotingWithDelegate(delegate common.Address)

If not, voting power is initialized to their own node: InitializeVoting()

This PR ports this feature from V1 into V2

Specifying a delegate:

:~$ rp p iv

Would you like to specify a delegate that can vote on your behalf on Protocol DAO proposals? [y/n]
y

Please enter the delegate's address:
0x7ac4C35034D7d175583E9f5876257fBc59E9946E

+============== Suggested Gas Prices ==============+

Without specifying a delegate:

:~$ rp p iv

Would you like to specify a delegate that can vote on your behalf on Protocol DAO proposals? [y/n]
n

+============== Suggested Gas Prices ==============+

This PR mirrors #628 for smartnode V1, including the updated text

[github-actions[bot]]

Coverage Report

[thomaspanf]

Converted to Draft because there is discussion on changing this text.

[github-actions[bot]]

Coverage Report

[github-actions[bot]]

Coverage Report

[thomaspanf]

Reopening this PR now that #628 has been merged.

[github-actions[bot]]

Coverage Report

[github-actions[bot]]

Merging this branch will decrease overall coverage

Impacted Packages	Coverage Δ	:robot:
github.com/rocket-pool/smartnode/v2/client	0.95% (-0.00%)	:thumbsdown:
github.com/rocket-pool/smartnode/v2/rocketpool-cli/commands/pdao	0.37% (-0.01%)	:thumbsdown:
github.com/rocket-pool/smartnode/v2/rocketpool-daemon/api/pdao	0.00% (ø)
github.com/rocket-pool/smartnode/v2/rocketpool-daemon/common/rewards	1.43% (ø)

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Coverage by file

### Changed files (no unit tests) | Changed File | Coverage Δ | Total | Covered | Missed | :robot: | |--------------|------------|-------|---------|--------|---------| | github.com/rocket-pool/smartnode/v2/client/pdao.go | 0.28% (**-0.00%**) | 352 (+6) | 1 | 351 (+6) | :thumbsdown: | | github.com/rocket-pool/smartnode/v2/rocketpool-cli/commands/pdao/commands.go | 6.03% (ø) | 464 | 28 | 436 | | | github.com/rocket-pool/smartnode/v2/rocketpool-cli/commands/pdao/initialize-voting.go | 0.00% (ø) | 322 (+169) | 0 | 322 (+169) | | | github.com/rocket-pool/smartnode/v2/rocketpool-daemon/api/pdao/handler.go | 0.00% (ø) | 39 | 0 | 39 | | | github.com/rocket-pool/smartnode/v2/rocketpool-daemon/api/pdao/initialize-voting-with-delegate.go | 0.00% (ø) | 157 (+157) | 0 | 157 (+157) | | | github.com/rocket-pool/smartnode/v2/rocketpool-daemon/api/pdao/initialize-voting.go | 0.00% (ø) | 156 (-1) | 0 | 156 (-1) | | | github.com/rocket-pool/smartnode/v2/rocketpool-daemon/common/rewards/utils.go | 3.50% (ø) | 1484 | 52 | 1432 | | _Please note that the "Total", "Covered", and "Missed" counts above refer to ***code statements*** instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code._