Add Zero-OS components: zinit, rfs v2.0.6, mycelium v0.6.1, corex v2.1.4

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "components/zinit"]
+	path = components/zinit
+	url = https://github.com/threefoldtech/zinit.git
+[submodule "components/rfs"]
+	path = components/rfs
+	url = https://github.com/threefoldtech/rfs.git
+[submodule "components/mycelium"]
+	path = components/mycelium
+	url = https://github.com/threefoldtech/mycelium.git

scripts/setup-submodules.sh

@@ -34,12 +34,12 @@ else
     echo "    rfs submodule already exists"
 fi
 
-# 3. Mycelium - tag 0.6.1 (musl build)
-echo "  Adding mycelium (networking layer) tag 0.6.1..."
+# 3. Mycelium - tag v0.6.1 (musl build)
+echo "  Adding mycelium (networking layer) tag v0.6.1..."
 if [ ! -d "components/mycelium" ]; then
     git submodule add https://github.com/threefoldtech/mycelium.git components/mycelium
     cd components/mycelium
-    git checkout 0.6.1
+    git checkout v0.6.1
     cd ../..
 else
     echo "    mycelium submodule already exists"
@@ -66,7 +66,7 @@ echo ""
 echo "Components added:"
 echo "  - zinit (master): $(ls -la components/zinit 2>/dev/null | wc -l) files"
 echo "  - rfs (v2.0.6): $(ls -la components/rfs 2>/dev/null | wc -l) files"
-echo "  - mycelium (0.6.1): $(ls -la components/mycelium 2>/dev/null | wc -l) files"
+echo "  - mycelium (v0.6.1): $(ls -la components/mycelium 2>/dev/null | wc -l) files"
 echo "  - corex (v2.1.4): $(ls -la components/corex/corex 2>/dev/null && echo "downloaded" || echo "missing")"
 echo ""
 echo "To update submodules later, run:"