* Enhance metrics labels
* Bound the metrics-label-values in arbitrary queries
* The metrics-label-values for prepared statements are kept as
they already represent a fixed set
* bump_dependencies.md: add nim-results dependency
* change imports stew/results to results
* switching to Nim 2.0.8
* waku.nimble: reflect the requirement nim 1.6.0 to 2.0.8
Adding --mm:refc as nim 2.0 enables a new garbage collector that we're
not yet ready to support
* adapt waku code to Nim 2.0
* gcsafe adaptations because Nim 2.0 is more strict
* on_chain/group_manager: use .async: (raises:[Exception]).
* bump nim-dnsdisc
* update nim-chronos to the latest state
* chat2.nim: catch any possible exception when stopping
* chat2bridge.nim: make it to compile after vendor bump
* ValidIpAddress (deprecated) -> IpAddress
* vendor/nim-libp2p additional bump
* libwaku: adapt to vendor bump
* testlib/wakunode.nim: adapt to vendor bump (ValidIpAddress -> IpAddress)
* waku_node: avoid throwing any exception from stop*(node: WakuNode)
* test_confutils_envvar.nim: ValidIpAddress -> IpAddress
* test_jsonrpc_store: capture exception
* test_rln*: handling exceptions
* adaptation to make test_rln_* to work properly
* signature enhancement of group_manager methods
* db_postgres: use prepared statements on most freq select queries
* db_postgres/dbconn.nim adding better feedback in case of query error
* dbconn: use of isOkOr
* pgasyncpool: refactor to reduce code (valueOr, catch:)
* db_postgres, postgres_driver: better performance by using callback.
There were a bunch of milliseconds being lost due to multiple-row
processing. This commit aims to have the minimum possible row
process time.
* pgasyncpool: clarifying logic around pool conn management.
* db_postgres: removing duplicate code and more searchable proc names.
It starts an asynchronous infinite task that checks the connectivity
with the database. In case of error, the postgres_healthcheck task
tries to reconnect for a while, and if it determines that the connection
cannot be resumed, then it invokes a callback indicating that
situation. For the case of the `wakunode2` app, this callback
quits the application itself and adds a log trace indicating
the connectivity issue with the database.
