meson: Support all tests from cmake

[igsha]

Unified test launch for both meson and cmake: make/ninja test. Support tests for cmake through ctest. Enable jid test in libdino.

[igsha]

Example of ctest output:

❯ ctest -N
Test project /home/isharonov/dino/build
  Test #1: xmpp-vala
  Test #2: libdino
  Test #3: omemo

Total Tests: 3

❯ ctest
Test project /home/isharonov/dino/build
    Start 1: xmpp-vala
1/3 Test #1: xmpp-vala ........................   Passed    0.05 sec
    Start 2: libdino
2/3 Test #2: libdino ..........................   Passed    0.05 sec
    Start 3: omemo
3/3 Test #3: omemo ............................   Passed    0.74 sec

100% tests passed, 0 tests failed out of 3

Total Test time (real) =   0.84 sec

Meson test example:

❯ meson test --list
xmpp-vala
libdino
omemo

❯ meson test
ninja: Entering directory `/home/isharonov/dino/build'
ninja: no work to do.
1/3 xmpp-vala        OK              0.11s
2/3 libdino          OK              0.09s
3/3 omemo            OK              0.41s

Ok:                 3
Expected Fail:      0
Fail:               0
Unexpected Pass:    0
Skipped:            0
Timeout:            0

Full log written to /home/isharonov/dino/build/meson-logs/testlog.txt