Add gopath if go is installed

zsh/.zshrc

@@ -51,6 +51,10 @@ delzip() {
 export MITMPROXY_SSLKEYLOGFILE="~/.mitmproxy/sslkeylogfile.txt"
 
 [[ -f ~/.zsh/.mac_config ]] && source ~/.zsh/.mac_config
+if `which go &>/dev/null`; then
+    export PATH="$PATH:$(go env GOPATH)/bin"
+    export GOPATH=$(go env GOPATH)
+fi
 
 # Powerlevel 10k
 # Remove padding on right side