Gh actions

[DenysGonchar]

Basic implementation of GH CI workflow for MongooseIM.
Implements CI testing similar to Travis except report uploading, this functionality will be added in the following PR.

[mongoose-im]

8969.1 / Erlang 23.0.3 / small_tests / 71a7f80
Reports root / small

---

8969.2 / Erlang 23.0.3 / internal_mnesia / 71a7f80
Reports root/ big
OK: 1495 / Failed: 0 / User-skipped: 168 / Auto-skipped: 0

---

8969.4 / Erlang 23.0.3 / mysql_redis / 71a7f80
Reports root/ big
OK: 2766 / Failed: 0 / User-skipped: 233 / Auto-skipped: 0

---

8969.3 / Erlang 23.0.3 / odbc_mssql_mnesia / 71a7f80
Reports root/ big
OK: 2771 / Failed: 0 / User-skipped: 228 / Auto-skipped: 0

---

8969.7 / Erlang 23.0.3 / elasticsearch_and_cassandra_mnesia / 71a7f80
Reports root/ big
OK: 330 / Failed: 0 / User-skipped: 38 / Auto-skipped: 0

---

8969.5 / Erlang 23.0.3 / riak_mnesia / 71a7f80
Reports root/ big
OK: 1629 / Failed: 0 / User-skipped: 180 / Auto-skipped: 0

---

8969.6 / Erlang 23.0.3 / ldap_mnesia / 71a7f80
Reports root/ big
OK: 1405 / Failed: 0 / User-skipped: 258 / Auto-skipped: 0

---

8969.9 / Erlang 22.3 / pgsql_mnesia / 71a7f80
Reports root/ big / small
OK: 2784 / Failed: 0 / User-skipped: 215 / Auto-skipped: 0

[arcusfelis]

looks good

[codecov]

Codecov Report

Merging #2990 (cd11040) into master (0b736f6) will decrease coverage by 2.76%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2990      +/-   ##
==========================================
- Coverage   79.10%   76.34%   -2.77%     
==========================================
  Files         377      377              
  Lines       32846    32846              
==========================================
- Hits        25982    25075     -907     
- Misses       6864     7771     +907     

Impacted Files	Coverage Δ
src/wpool/mongoose_wpool_cassandra.erl	0.00% <0.00%> (-94.12%)	⬇️
src/wpool/mongoose_wpool_elastic.erl	0.00% <0.00%> (-90.91%)	⬇️
src/mam/mod_mam_elasticsearch_arch.erl	0.00% <0.00%> (-88.40%)	⬇️
src/mam/mod_mam_muc_elasticsearch_arch.erl	0.00% <0.00%> (-86.37%)	⬇️
src/mam/mod_mam_muc_cassandra_arch.erl	0.00% <0.00%> (-85.07%)	⬇️
src/mam/mod_mam_cassandra_arch.erl	0.00% <0.00%> (-84.69%)	⬇️
src/mam/mod_mam_cassandra_prefs.erl	0.00% <0.00%> (-80.62%)	⬇️
src/cassandra/mongoose_cassandra.erl	0.00% <0.00%> (-77.78%)	⬇️
src/cassandra/mongoose_cassandra_pool.erl	0.00% <0.00%> (-75.00%)	⬇️
src/cassandra/mongoose_cassandra_worker.erl	0.00% <0.00%> (-71.70%)	⬇️
... and 12 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0b736f6...644eb68. Read the comment docs.

[mongoose-im]

8970.1 / Erlang 23.0.3 / small_tests / ba42ea8
Reports root / small

---

8970.2 / Erlang 23.0.3 / internal_mnesia / ba42ea8
Reports root/ big
OK: 1495 / Failed: 0 / User-skipped: 168 / Auto-skipped: 0

---

8970.3 / Erlang 23.0.3 / odbc_mssql_mnesia / ba42ea8
Reports root/ big
OK: 2771 / Failed: 0 / User-skipped: 228 / Auto-skipped: 0

---

8970.4 / Erlang 23.0.3 / mysql_redis / ba42ea8
Reports root/ big
OK: 2766 / Failed: 0 / User-skipped: 233 / Auto-skipped: 0

---

8970.7 / Erlang 23.0.3 / elasticsearch_and_cassandra_mnesia / ba42ea8
Reports root/ big
OK: 330 / Failed: 0 / User-skipped: 38 / Auto-skipped: 0

---

8970.5 / Erlang 23.0.3 / riak_mnesia / ba42ea8
Reports root/ big
OK: 1629 / Failed: 0 / User-skipped: 180 / Auto-skipped: 0

---

8970.6 / Erlang 23.0.3 / ldap_mnesia / ba42ea8
Reports root/ big
OK: 1405 / Failed: 0 / User-skipped: 258 / Auto-skipped: 0

---

8970.9 / Erlang 22.3 / pgsql_mnesia / ba42ea8
Reports root/ big / small
OK: 2784 / Failed: 0 / User-skipped: 215 / Auto-skipped: 0