Move provider plugins into a dedicated directory

Since we will introduce another type of plugin for the policy engine
we want to have each plugin type in separate directories.

We also have to adjust:

- plugin search directories
- po file location
- update paths for calls-doc target

plugins/provider/mm/meson.build

@@ -0,0 +1,57 @@
+#
+# Copyright (C) 2018 Purism SPC
+#
+# This file is part of Calls.
+#
+# Calls is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Calls 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 General Public License
+# along with Calls.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Bob Ham <bob.ham@puri.sm>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
+mm_install_dir = join_paths(full_calls_plugin_libdir, 'mm')
+
+mm_plugin = configure_file(
+  input: 'mm.plugin.in',
+  output: 'mm.plugin',
+  configuration: config_data,
+  install_dir: mm_install_dir
+)
+
+mm_deps = [
+  dependency('gobject-2.0'),
+  dependency('gtk+-3.0'),
+  dependency('ModemManager'),
+  dependency('mm-glib', version: '>= 1.12.0'),
+  dependency('libpeas-1.0'),
+]
+
+mm_sources = files(
+  [
+    'calls-mm-call.c', 'calls-mm-call.h',
+    'calls-mm-origin.c', 'calls-mm-origin.h',
+    'calls-mm-provider.c', 'calls-mm-provider.h'
+  ]
+)
+
+calls_mm = shared_module(
+  'mm',
+  mm_sources,
+  dependencies: mm_deps,
+  include_directories: src_include,
+  link_with: libcalls,
+  install: true,
+  install_dir: mm_install_dir
+)