Transfer centos2alma to the new submodule called dist-upgrader framework

The framework is a component of the distupgrade tools project that
is used to upgrade Ubuntu/Debian family distributions.
It was initially built on the distro-conversion-base, but was forked
to incorporate more core logic and some of actions we use.
We are relocating centos2alma to the framework to streamline maintenance
of both projects and facilitate the sharing of fixes between them.

.buckconfig

@@ -1,6 +1,11 @@
 # Documentation: https://buckbuild.com/concept/buckconfig.html
 
+[parser]
+    python_interpreter = /usr/bin/python2
 [python]
     interpreter = python2.7
 [python#py3]
-    interpreter = /usr/bin/python3.6
+    interpreter = /usr/bin/python3.6
+[repositories]
+    centos2alma = .
+    dist-upgrader = ./dist-upgrader

.gitmodules

@@ -1,3 +1,3 @@
-[submodule "common"]
-	path = common
-	url = https://github.com/plesk/distro-conversion-base
+[submodule "dist-upgrader"]
+	path = dist-upgrader
+	url = git@github.com:plesk/dist-upgrader.git

BUCK

@@ -1,43 +1,29 @@
 # Copyright 1999-2024. WebPros International GmbH. All rights reserved.
 # vim:ft=python:
 
-PRODUCT_VERSION = '1.2.3'
+PRODUCT_VERSION = '1.3.0'
 
 genrule(
     name = 'version',
     out = 'version.json',
     bash = r"""echo "{\"version\": \"%s\", \"revision\": \"`git rev-parse HEAD`\"}" > $OUT""" % (PRODUCT_VERSION),
 )
 
-python_library(
-    name = 'actions.lib',
-    srcs = glob(['./actions/*.py']),
-)
-
-python_library(
-    name = 'centos2alma.lib',
-    srcs = glob(['main.py', 'messages.py']),
-    deps = [
-        ':actions.lib',
-        '//common:common.lib',
-    ],
-    resources = [
-        ':version',
-    ],
-)
 
 python_binary(
-    name = 'centos2alma-script',
+    name = 'centos2alma.pex',
     platform = 'py3',
-    main_module = 'main',
+    build_args = ['--python-shebang', '/usr/bin/env python3'],
+    main_module = 'centos2almaconverter.main',
     deps = [
-        ':centos2alma.lib',
-    ]
+        'dist-upgrader//pleskdistup:lib',
+        '//centos2almaconverter:lib',
+    ],
 )
 
 genrule(
     name = 'centos2alma',
-    srcs = [':centos2alma-script'],
+    srcs = [':centos2alma.pex'],
     out = 'centos2alma',
-    cmd = 'cp $(location :centos2alma-script) $OUT && chmod +x $OUT',
-)
+    cmd = 'cp $(location :centos2alma.pex) $OUT && chmod +x $OUT',
+)