(maint) Log version and level at startup

Logs pxp-agent version and configured log level as soon as logging is
configured. Clarifies when versions change in logging, which makes
debugging issues easier.

exe/main.cc

@@ -183,7 +183,6 @@ int main(int argc, char *argv[]) {
 
     try {
         Configuration::Instance().setupLogging();
-        LOG_DEBUG("pxp-agent logging has been initialized");
     } catch (const Configuration::Error& e) {
         boost::nowide::cout << lth_loc::format("Failed to configure logging: {1}\n"
                                                "Cannot start pxp-agent", e.what());

lib/src/configuration.cc

@@ -268,7 +268,7 @@ void Configuration::setupLogging()
                                   loglevel,
                                   pcp_access_fstream_ptr_);
 
-    LOG_DEBUG("Logging configured");
+    LOG_INFO("pxp-agent {1} started at {2} level", PXP_AGENT_VERSION, loglevel);
 
     if (!log_on_stdout) {
         // Configure platform-specific things for file logging

locales/pxp-agent.pot

@@ -6,7 +6,7 @@
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: pxp-agent 1.5.3\n"
+"Project-Id-Version: pxp-agent 1.6.0\n"
 "Report-Msgid-Bugs-To: [email protected]\n"
 "POT-Creation-Date: \n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
@@ -69,11 +69,6 @@ msgid ""
 "Cannot start pxp-agent"
 msgstr ""
 
-#. debug
-#: exe/main.cc
-msgid "pxp-agent logging has been initialized"
-msgstr ""
-
 #: exe/main.cc
 msgid ""
 "Failed to configure logging: {1}\n"
@@ -172,9 +167,9 @@ msgstr ""
 msgid "invalid log level: '{1}'"
 msgstr ""
 
-#. debug
+#. info
 #: lib/src/configuration.cc
-msgid "Logging configured"
+msgid "pxp-agent {1} started at {2} level"
 msgstr ""
 
 #. info