Remove wallet submodule and update commit script

Delete the wallet submodule and add wallet/ to .gitignore. Update .github/scripts/commit-changes.sh to stage the blockchains directory (git add blockchains) instead of the previous add/exclude pattern, aligning commit automation with the repository layout change.

Author: gemcoder21

.github/scripts/commit-changes.sh

@@ -4,7 +4,7 @@ MESSAGE=${1:-"Update assets"}
 
 git config --global user.name 'github-actions[bot]'
 git config --global user.email 'github-actions[bot]@users.noreply.github.com'
-git add . ':!core'
+git add blockchains
 
 if git diff --cached --quiet; then
   echo "Nothing to commit"

.gitignore

@@ -6,3 +6,4 @@
 .env
 .env.test
 bin/
+wallet/