Merge protocol code generation bits from spice-common

The history for spice*.proto, spice_codegen.py and python_modules/ was
extracted from spice-common using git filter-branch:

git filter-branch \
    --prune-empty \
    --index-filter '
        git ls-tree -z -r --name-only --full-tree $GIT_COMMIT \
        | grep -z -v "^python_modules/" \
        | grep -z -v "^spice.proto" \
        | grep -z -v "^spice1.proto" \
        | grep -z -v "^spice_codegen.py" \
        | xargs -0 -r git rm -f --cached -r
    ' \
    -- \
    --all

git filter-branch --force \
    --prune-empty \
    --index-filter '
        git rm -f spice-protocol --cached  --ignore-unmatch
    ' \
    -- \
    --all

1 files changed, 0 insertions, 0 deletions

diff --git a/python_modules/__init__.py b/python_modules/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/python_modules/__init__.py