Interactive callback for `Code/Computer` placeholders

[GeigerJ2]

This is for being able to interactively populate jinja2-style fields in config yaml files, so that files from the aiida-resource-registry can also be used in aiida-core, rather than excepting as they currently do.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 18.97810% with 111 lines in your changes missing coverage. Please review.

Project coverage is 24.95%. Comparing base (d79137d) to head (03f83fc). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/aiida/cmdline/utils/template_config.py	13.64%	76 Missing :warning:
src/aiida/cmdline/params/options/main.py	33.34%	20 Missing :warning:
src/aiida/cmdline/commands/cmd_computer.py	21.06%	15 Missing :warning:

:exclamation: There is a different number of reports uploaded between BASE (d79137d) and HEAD (03f83fc). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (d79137d)	HEAD (03f83fc)
	3	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6918       +/-   ##
===========================================
- Coverage   79.14%   24.95%   -54.19%     
===========================================
  Files         566      567        +1     
  Lines       43401    43534      +133     
===========================================
- Hits        34345    10859    -23486     
- Misses       9056    32675    +23619     

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