feat: add more telemetry

[zivkovicmilos]

Description

Closes #1829

This PR introduces new metrics for different TM2 modules, as outlined in #1829.

Thank you @gfanton and @ajnavarro for helping out with the Docker issues 🙏

How do I test this out?

Head over to misc/telemetry and follow the README -- you can run everything locally in Docker 😎

cc @mazzy89

Metrics added

Consensus

• block interval (time between current and prev block in seconds)
• number of transactions in the latest block
• block size (in bytes)
• number of validators
• total voting power of the validator set

Networking

• number of inbound peers
• number of outbound peers
• number of pending peers (dialing)

JSON-RPC

• response time for requests (http / ws)

Mempool

• number of valid txs in the mempool
• number of txs in the mempool cache

VM

• gas used per execution
• CPU cycles
• different VM query message call frequency
• different VM execution frequency (run, call, addpkg)
• VM query error frequency

Contributors' checklist...

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests
• Added new benchmarks to generated graphs, if any. More info here.

[codecov]

Codecov Report

Attention: Patch coverage is 17.51825% with 226 lines in your changes are missing coverage. Please review.

Project coverage is 48.98%. Comparing base (c6cde63) to head (416819a).

Files	Patch %	Lines
tm2/pkg/telemetry/metrics/metrics.go	0.00%	123 Missing ⚠️
gno.land/pkg/sdk/vm/handler.go	0.00%	29 Missing ⚠️
tm2/pkg/bft/rpc/lib/server/handlers.go	9.67%	26 Missing and 2 partials ⚠️
gno.land/pkg/sdk/vm/keeper.go	64.28%	15 Missing ⚠️
tm2/pkg/bft/consensus/state.go	28.57%	10 Missing ⚠️
tm2/pkg/telemetry/init.go	0.00%	8 Missing ⚠️
tm2/pkg/bft/mempool/clist_mempool.go	41.66%	7 Missing ⚠️
tm2/pkg/p2p/switch.go	50.00%	4 Missing ⚠️
gno.land/cmd/gnoland/start.go	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2059      +/-   ##
==========================================
- Coverage   49.14%   48.98%   -0.17%     
==========================================
  Files         576      576              
  Lines       77616    77736     +120     
==========================================
- Hits        38148    38078      -70     
- Misses      36377    36568     +191     
+ Partials     3091     3090       -1     

Flag	Coverage Δ
gno.land	61.38% <36.98%> (-0.31%)	⬇️
misc/autocounterd	0.00% <ø> (ø)
misc/genproto	0.00% <ø> (ø)
misc/genstd	73.90% <ø> (ø)
misc/goscan	0.00% <ø> (ø)
misc/logos	17.38% <ø> (ø)
misc/loop	0.00% <ø> (ø)
tm2	54.53% <10.44%> (-0.23%)	⬇️

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[albttx]

please watch #2032