Feature/509 remove service lang support

[pnoltes]

Remove support for the "service.lang" service property and its usage.

The idea behind the "service.lang" property was to distinguish between C or C++ services, but this feature was confusion and with a good service naming convention not needed.

[codecov-commenter]

Codecov Report

Merging #677 (9f40a29) into master (eeed2c6) will increase coverage by 0.01%. The diff coverage is 88.88%.

:exclamation: Current head 9f40a29 differs from pull request most recent head 70d22bf. Consider uploading reports for the commit 70d22bf to get more accurate results

@@            Coverage Diff             @@
##           master     #677      +/-   ##
==========================================
+ Coverage   81.65%   81.66%   +0.01%     
==========================================
  Files         252      252              
  Lines       32656    32633      -23     
==========================================
- Hits        26664    26649      -15     
+ Misses       5992     5984       -8     

Files	Coverage Δ
...undles/pubsub/pubsub_admin_tcp/src/psa_activator.c	100.00% <ø> (ø)
...b/pubsub_admin_tcp/src/pubsub_tcp_topic_receiver.c	68.87% <ø> (-0.09%)	:arrow_down:
...in_websocket/src/pubsub_websocket_topic_receiver.c	67.47% <ø> (-0.09%)	:arrow_down:
...undles/pubsub/pubsub_admin_zmq/src/psa_activator.c	100.00% <ø> (ø)
...b/pubsub_admin_zmq/src/pubsub_zmq_topic_receiver.c	76.64% <ø> (-0.07%)	:arrow_down:
...ubsub/pubsub_spi/src/pubsub_interceptors_handler.c	98.09% <ø> (-0.02%)	:arrow_down:
...ubsub/pubsub_topology_manager/src/pstm_activator.c	100.00% <ø> (ø)
bundles/pubsub/pubsub_utils/src/pubsub_matching.c	78.12% <ø> (-0.17%)	:arrow_down:
...te_service_admin_dfi/src/export_registration_dfi.c	79.67% <ø> (-0.11%)	:arrow_down:
...n_shm_v2/rsa_shm/src/rsa_shm_export_registration.c	100.00% <ø> (ø)
... and 7 more

... and 3 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more