revert(experiment): separate create questions with flag parsings

[zimeg]

Changelog

Experimental changes - N/A 🍀

Summary

This PR reverts #362 to separate create questions with flag parsing handled with the clients.IO package. This hopes to fix an issue with the --template flag.

Notes

• 🧪 Toward conclusion of the charm experiment I'm thinking to cover edge cases of the initial survey to huh package switch before extending specific prompts

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[zimeg]

🔍 A few comments of thoughts follow and a recorded demo went toward #400 IIRC!

[zimeg]

🧰 thought: Separating API and prompts from cmd packages might make testing boundaries more concise? We have mock setups to test particular option and flag arguments are provided as a MatchPromptConfig helper, which might lean on tests for existing prompts.

🤓 ramble: In this example, L1357 can also be set with a slice of options to match in the select:

slack-cli/internal/prompts/app_select_test.go

Lines 1353 to 1372 in 35e1743

	clientsMock.IO.On(
	SelectPrompt,
	mock.Anything,
	"Choose a team",
	mock.Anything,
	iostreams.MatchPromptConfig(
	iostreams.SelectPromptConfig{
	Flag: clientsMock.Config.Flags.Lookup("team"),
	Required: true,
	},
	),
	).Return(
	iostreams.SelectPromptResponse{
	Flag: tc.teamPromptResponseFlag,
	Prompt: tc.teamPromptResponsePrompt,
	Option: tc.teamPromptResponseOption,
	Index: tc.teamPromptResponseIndex,
	},
	nil,
	)

[zimeg]

👾 ramble: I think boundaries of iostreams might be best instead of prompting imports for huh often!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.82%. Comparing base (35e1743) to head (42aeefd).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #401      +/-   ##
==========================================
- Coverage   67.90%   67.82%   -0.08%     
==========================================
  Files         218      217       -1     
  Lines       18050    17997      -53     
==========================================
- Hits        12256    12206      -50     
+ Misses       4640     4637       -3     
  Partials     1154     1154              

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