Fix: get_all_script_names and get_all_named_waveform_names APIs to return list of strings than a comma separated string

[rahulr-NI]

• This contribution adheres to CONTRIBUTING.md.

- [ ] I've updated CHANGELOG.md if applicable.

• I've added tests applicable for this pull request

What does this Pull Request accomplish?

There are two APIs in which the return type is expected as a list of string, but we do return a comma separated string. This issue is fix in this PR for following APIs.

• get_all_script_names
• get_all_named_waveform_names

actual_buffer_size parameter is removed from APIs as this is not used in going forward approach.

Necessary documentation changes are done to point our list of strings as return type.

Also, the relevant system tests are included to verify the driver call.

What testing has been done?

The system tests are included to ensure that the driver call is happening as intended.
The Tox build success and modifies the generated files as expected.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.72%. Comparing base (4b9434f) to head (7f90b1a).
⚠️ Report is 1 commits behind head on master.

❌ Your project status has failed because the head coverage (81.72%) is below the target coverage (85.00%). You can increase the head coverage or adjust the target coverage.

❗ There is a different number of reports uploaded between BASE (4b9434f) and HEAD (7f90b1a). Click for more details.

HEAD has 72 uploads less than BASE

Flag	BASE (4b9434f)	HEAD (7f90b1a)
codegenunittests	3	1
nifakeunittests	15	5
nidcpowerunittests	15	5
nidigitalunittests	15	5
nimodinstunittests	15	5
niscopeunittests	15	5
nitclkunittests	15	5
nimodinstsystemtests	1	0
nisesystemtests	1	0
nirfsgsystemtests	1	0
niswitchsystemtests	1	0
nifgensystemtests	1	0
nidmmsystemtests	1	0
niscopesystemtests	1	0
nidcpowersystemtests	1	0
nitclksystemtests	1	0
nidigitalsystemtests	1	0

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2133      +/-   ##
==========================================
- Coverage   89.07%   81.72%   -7.36%     
==========================================
  Files          71       29      -42     
  Lines       18960     4115   -14845     
==========================================
- Hits        16889     3363   -13526     
+ Misses       2071      752    -1319     

Flag	Coverage Δ
codegenunittests	84.44% <ø> (ø)
nidcpowersystemtests	?
nidcpowerunittests	89.53% <ø> (ø)
nidigitalsystemtests	?
nidigitalunittests	68.44% <ø> (ø)
nidmmsystemtests	?
nifakeunittests	85.52% <ø> (ø)
nifgensystemtests	?
nimodinstsystemtests	?
nimodinstunittests	94.20% <ø> (ø)
nirfsgsystemtests	?
niscopesystemtests	?
niscopeunittests	43.20% <ø> (ø)
nisesystemtests	?
niswitchsystemtests	?
nitclksystemtests	?
nitclkunittests	98.26% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.
see 46 files with indirect coverage changes

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