[fix] #2599: Remove nursery lints

[appetrosyan]

Description of the Change

Nursery lints are explicitly disabled. The lints which were enabled as part of clippy::nursery are instead enabled individually.

Issue

Closes #2599

Benefits

Smoother toolchain upgrade process

Possible Drawbacks

New lints have to be explicitly enabled. Migitation:

• On each upgrade uncomment clippy::nursery and see the effects of new lints.

[codecov]

Codecov Report

Merging #3098 (e05969f) into iroha2-dev (a4d5c9f) will increase coverage by 2.83%.
The diff coverage is 74.76%.

@@              Coverage Diff               @@
##           iroha2-dev    #3098      +/-   ##
==============================================
+ Coverage       62.33%   65.16%   +2.83%     
==============================================
  Files             169      171       +2     
  Lines           31218    33499    +2281     
==============================================
+ Hits            19459    21831    +2372     
+ Misses          11759    11668      -91     

Impacted Files	Coverage Δ
cli/src/main.rs	1.09% <0.00%> (ø)
cli/src/torii/mod.rs	27.65% <ø> (ø)
cli/src/torii/utils.rs	75.00% <0.00%> (-9.85%)	⬇️
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/logger.rs	70.21% <ø> (ø)
config/src/path.rs	0.00% <0.00%> (ø)
core/src/lib.rs	100.00% <ø> (ø)
core/src/smartcontracts/isi/block.rs	85.71% <ø> (-3.18%)	⬇️
... and 159 more

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[mversic]

better, because nursery lints, since they are incomplete/not agreed upon/incorrect, can make the code look worse and encourage bad practices among engineers to just to satisfy the linter