feat: Add support for mappers in the invoke command

[pnadolny13]

Closes #3232

I'm not sure if theres a better way to get the mapping_name from a plugin object but this properly finds the mapper/mapping from my testing. I was able to run cat github_out.json | meltano invoke hide-github-mails using the tutorial mapper example to hash github emails and everything worked as expected.

UPDATE: it looks like we do a similar lookup for mapping_name in

meltano/src/meltano/core/project_plugins_service.py

Line 306 in e8b9601

if plugin.extra_config.get("_mapping_name") == mapping_name:

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[pnadolny13]

It looks like at this point the only check failing is precommit which is saying the method is too complex. I can quickly refactor that method but it will ballon the diff of this PR a bit. Let me know what you would like me to do.

[codecov]

Codecov Report

Merging #7992 (d2f48cd) into main (a704ec0) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #7992   +/-   ##
=======================================
  Coverage   89.53%   89.53%           
=======================================
  Files         297      297           
  Lines       21897    21903    +6     
  Branches     2441     2443    +2     
=======================================
+ Hits        19605    19611    +6     
  Misses       1936     1936           
  Partials      356      356           

Files Changed	Coverage Δ
src/meltano/core/block/parser.py	86.23% <100.00%> (-1.27%)	⬇️
src/meltano/core/project_plugins_service.py	93.00% <100.00%> (+0.48%)	⬆️
tests/meltano/cli/test_run.py	98.36% <100.00%> (-0.01%)	⬇️
tests/meltano/core/test_project_plugins_service.py	100.00% <100.00%> (ø)

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[edgarrmondragon]

Nice!

[edgarrmondragon]

@pnadolny13 Should the docs in https://docs.meltano.com/guide/mappers/ be updated? I think at least the FAQ section should, wdyt?

[pnadolny13]

@edgarrmondragon good point, I'll update that and see if theres other docs that can be updated too.

[pnadolny13]

@edgarrmondragon I updated the docs. One final review then I think this should be good to merge!

[edgarrmondragon]