Update setup guide

[srph]

#9 introduced more friction into the build step, and we should update the setup guide when we find the chance.

We also built stride-build instead of simply using stride's proto files because of type conflicts + duplicates (related to #10)

To sum up, we probably manually built and removed some directories.

[srph]

Draft

Update git submodules

git submodule sync --recursive
git submodule update --init --recursive

Checkout relevant branches (optional)

If there are any branches you should be using instead:

cd stride
git checkout <branch>
git pull origin <branch>

cd ../

cd cosmos
git checkout <branch>
git pull origin <branch>

Rebuild stride proto build

npm run codegen:build

Copy stride proto build for customizability

mkdir -p stride-build
cp -r ./stride/build/* ./stride-build

Afterwards, remove files or directories as needed

Codegen

Taken straight from the README

npm run codegen
npm run buidl

[srph]

Added here 422d949