feat: add optional file flags for cli view add command

[najeal]

Relevant issue(s)

Resolves #3280

Description

This PR adds add optional way to provide query and sdl data from a file when using cli view add command.

Tasks

• I made sure the code is well commented, particularly hard-to-understand areas.
• I made sure the repository-held documentation is changed accordingly.
• I made sure the pull request title adheres to the conventional commit style (the subset used in the project can be found in tools/configs/chglog/config.yml).
• I made sure to discuss its limitations such as threats to validity, vulnerability to mistake and misuse, robustness to invalidation of assumptions, resource requirements, ...

How has this been tested?

It has been tested adding new unit tests.

Specify the platform(s) on which this was tested:

• MacOS

[fredcarle]

Hi @najeal. Thank you for contributing this PR.

The pattern in your implementation is clever but makes it hard for users to understand easily how to use the command as mixes ordered args and unordered flags.

I would recommend switching entirely to flags like we do with some of our other commands. Cobra has some functionality to do an exclusif or on a set of flags so we could easily do.

--query xor --query-file
--sdl xor --sdl-file
--lens xor --lens-file

Once/if you decide to do the change, please update the command usage description accordingly :)

[najeal]

Hi @fredcarle ! I will do the changes 👍

[najeal]

Changes are done 👍