Wallet RPC developer guide - Full refresh

As i did for Daemon RPC dev guide, and as i did promise this for a long time, i started a full refresh of wallet RPC dev guide.

See !854 (closed)

Here i will:

• add any missing call

• update existing call with:

  • new params

  • new examples

  • alias section

• reorder calls based on the wallet_rpc_server.h call order

I open this PR as a Work in Progress to track my progress:

• get_balance
• get_address
• get_address_index
• create_address
• label_address
• get_accounts
• create_account
• label_account
• get_account_tags
• tag_accounts
• untag_accounts
• set_account_tag_description
• get_height
• transfer
• transfer_split
• sign_transfer
• submit_transfer
• sweep_dust
• sweep_all
• sweep_single
• relay_tx
• store
• get_payments
• get_bulk_payments
• incoming_transfers
• query_key
• make_integrated_address
• split_integrated_address
• stop_wallet
• rescan_blockchain
• set_tx_notes
• get_tx_notes
• set_attribute
• get_attribute
• get_tx_key
• check_tx_key
• get_tx_proof
• check_tx_proof
• get_spend_proof
• check_spend_proof
• get_reserve_proof
• check_reserve_proof
• get_transfers
• get_transfer_by_txid
• sign
• verify
• export_outputs
• import_outputs
• export_key_images
• import_key_images
• make_uri
• parse_uri
• get_address_book
• add_address_book
• refresh
• delete_address_book
• rescan_spent
• start_mining
• stop_mining
• get_languages
• create_wallet
• open_wallet
• change_wallet_password
• is_multisig
• prepare_multisig
• make_multisig
• export_multisig_info
• import_multisig_info
• finalize_multisig
• sign_multisig
• submit_multisig
• get_version

Any suggestion here is welcome.