Add static check with "avocado-static-checks"

Adds a Python module import order check, and code style check.

This is based on "avocado-static-checks", which is being added here as
a submodule.  On CI, it uses the "avocado-ci-tools" actions to check
out and run it, but the same can be done locally with the submodule.

Signed-off-by: Cleber Rosa <[email protected]>

.github/workflows/ci.yml

@@ -21,3 +21,13 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - run: pip install -r requirements-travis.txt
       - run: make check
+
+  static-checks:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - name: run static checks
+        uses: avocado-framework/avocado-ci-tools@main
+        with:
+          avocado-static-checks: true

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "avocado-static-checks"]
+	path = static-checks
+	url = ../avocado-static-checks
+	branch = main

aexpect/__init__.py

@@ -14,23 +14,24 @@
 entry-points.
 """
 
-from .exceptions import ExpectError
-from .exceptions import ExpectProcessTerminatedError
-from .exceptions import ExpectTimeoutError
-from .exceptions import ShellCmdError
-from .exceptions import ShellError
-from .exceptions import ShellProcessTerminatedError
-from .exceptions import ShellStatusError
-from .exceptions import ShellTimeoutError
-
-from .client import Spawn
-from .client import Tail
-from .client import Expect
-from .client import ShellSession
-from .client import kill_tail_threads
-from .client import run_tail
-from .client import run_bg
-from .client import run_fg
-
-from . import remote
-from . import rss_client
+from . import remote, rss_client
+from .client import (
+    Expect,
+    ShellSession,
+    Spawn,
+    Tail,
+    kill_tail_threads,
+    run_bg,
+    run_fg,
+    run_tail,
+)
+from .exceptions import (
+    ExpectError,
+    ExpectProcessTerminatedError,
+    ExpectTimeoutError,
+    ShellCmdError,
+    ShellError,
+    ShellProcessTerminatedError,
+    ShellStatusError,
+    ShellTimeoutError,
+)