Issue #2867: add an initial config for perlimports

The command for the invocation has been added as a comment.
Skip checks for modules that should be ignored for now.
Don't care about whitespace, as Perl::Tidy takes care of formatting.

.perlimports.toml

@@ -0,0 +1,54 @@
+# --
+# Copyright (C) 2019-2024 Rother OSS GmbH, https://otobo.de/
+# --
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU AFFERO General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+# or see http://www.gnu.org/licenses/agpl.txt.
+# --
+
+# Valid log levels are:
+# debug, info, notice, warning, error, critical, alert, emergency
+# critical, alert and emergency are not currently used.
+#
+# Please use boolean values in this config file. Negated options (--no-*) are
+# not permitted here. Explicitly set options to true or false.
+#
+# Some of these values deviate from the regular perlimports defaults. In
+# particular, you're encouraged to leave preserve_duplicates and
+# preserve_unused disabled.
+
+# Call with a command like:
+#   perlimports --lint  Kernel/Autoload Kernel/Language Kernel/Modules Kernel/System Kernel/Config Kernel/GenericInterface Kernel/Output scripts bin 2>&1 | tee perlimports.out
+
+cache                           = false # setting this to true is currently discouraged
+ignore_modules                  = [
+    "Test2::V0",
+    "Try::Tiny",
+    "Kernel::System::VariableCheck",
+    "Kernel::System::UnitTest::RegisterOM",
+    "Kernel::System::UnitTest::RegisterDriver",
+    "Kernel::System::UnitTest::Selenium"
+]
+ignore_modules_filename         = ""
+ignore_modules_pattern          = "" # regex like "^(Foo|Foo::Bar)"
+ignore_modules_pattern_filename = ""
+libs                            = [".", "Kernel/cpan-lib"]
+log_filename                    = ""
+log_level                       = "warn"
+never_export_modules            = []
+never_export_modules_filename   = ""
+padding                         = false
+preserve_duplicates             = false
+preserve_unused                 = false
+tidy_whitespace                 = false