Feat/Add meta to neofs-lens

[carpawell]

Adds meta subcommand. Also, includes refactoring that separates inspect and list commands on write-cache and blobovnicza subcommands.

[codecov]

Codecov Report

Merging #1714 (70b9f63) into master (82839cb) will decrease coverage by 0.63%.
The diff coverage is n/a.

❗ Current head 70b9f63 differs from pull request most recent head d5c3286. Consider uploading reports for the commit d5c3286 to get more accurate results

@@            Coverage Diff             @@
##           master    #1714      +/-   ##
==========================================
- Coverage   33.19%   32.55%   -0.64%     
==========================================
  Files         351      337      -14     
  Lines       23422    22667     -755     
==========================================
- Hits         7774     7380     -394     
+ Misses      14997    14674     -323     
+ Partials      651      613      -38     

Impacted Files	Coverage Δ
...kg/local_object_storage/blobstor/fstree/control.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/local_object_storage/blobstor/mode.go	0.00% <0.00%> (-86.67%)	⬇️
pkg/local_object_storage/metabase/mode.go	0.00% <0.00%> (-81.82%)	⬇️
..._object_storage/blobstor/blobovniczatree/exists.go	0.00% <0.00%> (-77.78%)	⬇️
pkg/local_object_storage/blobstor/fstree/option.go	0.00% <0.00%> (-75.00%)	⬇️
...object_storage/blobstor/blobovniczatree/control.go	42.62% <0.00%> (-25.88%)	⬇️
...object_storage/blobstor/blobovniczatree/iterate.go	62.68% <0.00%> (-23.99%)	⬇️
...ject_storage/blobstor/blobovniczatree/get_range.go	55.17% <0.00%> (-13.80%)	⬇️
pkg/morph/event/container/delete.go	51.85% <0.00%> (-10.94%)	⬇️
pkg/morph/event/container/put.go	42.85% <0.00%> (-10.85%)	⬇️
... and 41 more

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[fyrchik]

Can we move all 3 calls in this package in a single parameterless function? They have the same purpose -- open DB in readonly to view sth.

[carpawell]

sure, added such funcs for all the components

[cthulhu-rider]

For future pls don't blend feature code with refactor

[carpawell]

For future pls don't blend feature code with refactor

Usually, I do not do PRs that way. That happened because of the order of my changes: first, i added the meta but then realized that it was incredibly hard to use it without a refactor (and separate the refactor from the feature, so that is not refactoring for refactoring, just adding the meta make usage hard). In fact, commits are quite independent now.

Rebased CHANGELOG conflicts.