feat: configurable JSON-RPC APIs (#349)

* fix confusing name

* feat: Enable configurable grpc apis

* docs: Update docs and changelog

* Organized flags order

* fix linter

* fix linter

* fix maligned struct

* fix typo in docs

* fix unnecesary duplicate

* Update cmd/ethermintd/config/config.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update cmd/ethermintd/config/config.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update cmd/ethermintd/config/config.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update docs/basics/json_rpc.md

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* fix eth to be manage as default

* Update init.sh

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update tests/solidity/init-test-node.sh

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* add default case

* add default enable api namespaces

* update changelog

* fix namespaces array  handler

* remove duplicated changelog

* fix typo

* remove duplicates namespaces and fix eth namespace issue

* fix variable name

* break line in docs

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

tests/solidity/init-test-node.sh

@@ -43,4 +43,4 @@ ethermintd collect-gentxs
 ethermintd validate-genesis
 
 # Start the node (remove the --pruning=nothing flag if historical queries are not needed)
-ethermintd start --pruning=nothing --rpc.unsafe --keyring-backend test --trace --log_level info
+ethermintd start --pruning=nothing --rpc.unsafe --keyring-backend test --trace --log_level info --evm-rpc.api eth,txpool,personal,net,debug,web3