CI MSYS2: added the genromfs tool for creating romfs file systems

Add:

 - the genromfs tool for creating romfs file systems

https://github.com/chexum/genromfs

Signed-off-by: simbit18 <[email protected]>

Author: simbit18

.github/workflows/build.yml

@@ -342,6 +342,7 @@ jobs:
             ninja
             python-pip
             vim
+            genromfs
 
       - name: pip3 install
         run: |