[fix] #2963: Queue remove transactions correctly

[Erigara]

Description of the Change

• Add queue size to metrics;
• Fix Queue to correctly remove transactions;

Issue

Closes #2963.

Benefits

• No infinite growth of the transaction queue;
• More diagnostic information in the /status response.

Possible Drawbacks

None.

Usage Examples or Tests [optional]

Queue size field in the status response:

curl http://127.0.0.1:8180/status

Alternate Designs [optional]

Multi-signatures are still not handled correctly by the queue, i would suggest fix this in the separate PR.

[codecov]

Codecov Report

Merging #3035 (043dd97) into iroha2-dev (a4d5c9f) will increase coverage by 1.22%.
The diff coverage is 65.58%.

@@              Coverage Diff               @@
##           iroha2-dev    #3035      +/-   ##
==============================================
+ Coverage       62.33%   63.55%   +1.22%     
==============================================
  Files             169      170       +1     
  Lines           31218    32864    +1646     
==============================================
+ Hits            19459    20886    +1427     
- Misses          11759    11978     +219     

Impacted Files	Coverage Δ
cli/src/main.rs	1.09% <0.00%> (ø)
cli/src/torii/mod.rs	27.65% <ø> (ø)
client/src/client.rs	39.91% <0.00%> (ø)
client_cli/src/main.rs	0.24% <0.00%> (-0.01%)	⬇️
config/base/src/lib.rs	91.57% <ø> (+55.21%)	⬆️
config/src/lib.rs	33.33% <ø> (ø)
config/src/path.rs	0.00% <0.00%> (ø)
core/src/smartcontracts/isi/block.rs	85.71% <ø> (-3.18%)	⬇️
data_model/src/block_value.rs	100.00% <ø> (ø)
data_model/src/lib.rs	58.45% <ø> (+8.45%)	⬆️
... and 100 more

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[mversic]

something's wrong with issue id in the title. It actually references a PR instead. Probably a github issue? But even the Close #num references the PR, you can fix that

[Erigara]

something's wrong with issue id in the title. It actually references a PR instead. Probably a github issue? But even the Close #num references the PR, you can fix that

oh, sure

[QuentinI]

Sorry for taking so long, wanted to make sure I understood what's going on.