[prepare] rename: testgres -> src

Minimal changes.

pg_probackup2 was not changed [I think, it is broken now].

Author: dmitry-lipetsk

.vscode/settings.json

@@ -0,0 +1,10 @@
+{
+    "python.testing.unittestEnabled": false,
+    "python.testing.pytestEnabled": true,
+
+    "python.testing.pytestArgs": [
+        "-l",
+        "-vvv",
+        "-n", "8"
+    ],
+}

create_py_env.sh

@@ -0,0 +1,9 @@
+virtualenv venv
+source venv/bin/activate
+# pip install -U .
+pip install flake8
+pip install pytest
+pip install pytest-xdist
+pip install psycopg2
+pip install six
+pip install psutil

init_test_env.sh

@@ -0,0 +1,5 @@
+export PG_BIN='/usr/local/pgsql/bin'
+export PG_CONFIG=${PG_BIN}/pg_config
+#export PGPROBACKUPBIN="/home/dima/MY/GitLab2/pg_probackup2/ee/work5/pg_probackup"
+export PATH=${PATH}:${PG_BIN}
+

run_vscode.sh

@@ -0,0 +1,4 @@
+source ./init_test_env.sh
+
+code .
+

setup.py

@@ -30,6 +30,7 @@
     version='1.11.0',
     name='testgres',
     packages=['testgres', 'testgres.operations', 'testgres.impl'],
+    package_dir={"testgres": "src"},
     description='Testing utility for PostgreSQL and its extensions',
     url='https://github.com/postgrespro/testgres',
     long_description=readme,