Added static-python and static gdb submodules

Author: roddyrap

.gitmodules

@@ -0,0 +1,8 @@
+[submodule "cpython-static"]
+	path = src/submodule_packages/cpython-static
+	url = git@github.com:guyush1/cpython-static.git
+	branch = python3.12-static
+[submodule "binutils-gdb-static"]
+	path = src/submodule_packages/binutils-gdb
+	url = git@github.com:guyush1/binutils-gdb.git
+	branch = gdb-static

src/download_packages.sh

@@ -201,14 +201,6 @@ function download_gdb_packages() {
         fi
     done
 
-    if [[ ! -d gdb-static ]]; then
-        git clone https://github.com/guyush1/binutils-gdb.git --single-branch --branch gdb-static
-    fi
-
-    if [[ ! -d python3.12-static ]]; then
-        git clone https://github.com/guyush1/cpython-static.git --single-branch --branch python3.12-static
-    fi
-
     fancy_title "Finished downloading GDB packages"
     popd
 }