PIM: examples: flatten examples/pim to a single directory level

The pim examples were nested two levels deep (dm/basic, dm/ipv6, sm/basic,
sm/ipv6, ssm/ipv6). Flatten to one level: the IPv4 "basic" demos move up to the
family dir (dm/basic -> dm, sm/basic -> sm) and the IPv6 variants get an _ipv6
suffix (dm/ipv6 -> dm_ipv6, sm/ipv6 -> sm_ipv6, ssm/ipv6 -> ssm_ipv6). iptv is
unchanged.

Updates each network's `package inet.examples.pim.*` declaration and the
tests/fingerprint/examples.csv working dirs to match. The package rename does not
affect the runtime module paths, so all 10 PIM example fingerprints stay
byte-identical.

Author: avarga

examples/pim/dm/basic/networkConfig.xml examples/pim/dm/networkConfig.xmlexamples/pim/dm/basic/networkConfig.xml renamed to examples/pim/dm/networkConfig.xml

@@ -9,7 +9,7 @@
 // @author: Tomas Prochazka (mailto:xproch21@stud.fit.vutbr.cz), Vladimir Vesely (mailto:ivesely@fit.vutbr.cz)
 // @brief Topology with PIM network
 
-package inet.examples.pim.dm.basic;
+package inet.examples.pim.dm;
 
 import inet.networklayer.configurator.ipv4.Ipv4NetworkConfigurator;
 import inet.node.ethernet.Eth100M;

examples/pim/dm/basic/omnetpp.ini examples/pim/dm/omnetpp.iniexamples/pim/dm/basic/omnetpp.ini renamed to examples/pim/dm/omnetpp.ini

@@ -4,7 +4,7 @@
 // SPDX-License-Identifier: LGPL-3.0-or-later
 //
 
-package inet.examples.pim.dm.ipv6;
+package inet.examples.pim.dm_ipv6;
 
 import inet.networklayer.configurator.ipv6.Ipv6FlatNetworkConfigurator;
 import inet.node.ethernet.Eth100M;

examples/pim/dm/basic/pimDMFinal.ned examples/pim/dm/pimDMFinal.nedexamples/pim/dm/basic/pimDMFinal.ned renamed to examples/pim/dm/pimDMFinal.ned

@@ -9,7 +9,7 @@
 // @author: Tomas Prochazka (mailto:xproch21@stud.fit.vutbr.cz), Vladimir Vesely (mailto:ivesely@fit.vutbr.cz)
 // @brief Topology with PIM network
 
-package inet.examples.pim.sm.basic;
+package inet.examples.pim.sm;
 
 import inet.networklayer.configurator.ipv4.Ipv4NetworkConfigurator;
 import inet.node.ethernet.Eth100M;

examples/pim/dm/ipv6/PimDmIpv6.ned examples/pim/dm_ipv6/PimDmIpv6.nedexamples/pim/dm/ipv6/PimDmIpv6.ned renamed to examples/pim/dm_ipv6/PimDmIpv6.ned

@@ -4,7 +4,7 @@
 // SPDX-License-Identifier: LGPL-3.0-or-later
 //
 
-package inet.examples.pim.sm.ipv6;
+package inet.examples.pim.sm_ipv6;
 
 import inet.networklayer.configurator.ipv6.Ipv6FlatNetworkConfigurator;
 import inet.node.ethernet.Eth100M;