Update bashum setup and init scripts with new directory name

dotfiles/bashum/head.bashrc

 BASHUM_BMO_NAG=false
 
 for include in \
-  "${HOME}/.bash/colors.bashrc" \
-  "${HOME}/.bash/defaults.bashrc" \
-  "${HOME}/.bash/main.bashrc" \
-  "${HOME}/.bash/user/$USER.bashrc" \
-  "${HOME}/.bash/host/$(hostname -s).bashrc" \
-  "${HOME}/.bash/post.bashrc";
+  "${HOME}/.bashum/colors.bashrc" \
+  "${HOME}/.bashum/defaults.bashrc" \
+  "${HOME}/.bashum/main.bashrc" \
+  "${HOME}/.bashum/user/$USER.bashrc" \
+  "${HOME}/.bashum/host/$(hostname -s).bashrc" \
+  "${HOME}/.bashum/post.bashrc";
 do
   test -f "$include" && . "$include";
 done

dotfiles/bashum/setup

 else
     put ''
     put '# added by https://gitea.vornet.cz/netvor/mydots'
-    put 'test -f "${HOME}/.bash/head.bashrc" \'
-    put ' && . "${HOME}/.bash/head.bashrc"'
+    put 'test -f "${HOME}/.bashum/head.bashrc" \'
+    put ' && . "${HOME}/.bashum/head.bashrc"'
 fi