feat(fastlane_cli): add new spec

[bthnkucuk]

Overview

Adds an autocomplete spec for fastlane_cli
— a terminal-first Fastlane assistant for Flutter projects, distributed via
its own Homebrew tap (brew install bthnkucuk/fastlane_cli/fastlane_cli).

What this CLI does

fastlane_cli is a Dart binary that wraps a categorised, locale-aware
Fastlane runner so any Flutter app can drop a cli_profile.yaml next to its
fastlane/ folder and run lanes (TestFlight, Play Internal, store metadata,
version bump, etc.) from a terminal-first TUI or non-interactively
through subcommands like fastlane_cli run <action-id>.

Spec design notes

• No static action list. The run <action-id> positional argument and the
  list --category <id> option both use a generator that shells out to
  fastlane_cli list --json and parses the result (id, title,
  description, category). This keeps suggestions accurate when consumers
  add custom actions in their cli_profile.yaml — a static enumeration would
  go stale instantly.
• Cache TTL: 5s. The CLI's JSON output is deterministic for a given profile,
  so re-running on every keystroke is wasteful; 5s is plenty for snappy
  iterative usage.
• Every --profile flag uses template: "filepaths" so the dropdown
  surfaces yaml files (especially the well-known cli_profile.yaml).
• skills install --global and --project use exclusiveOn since the
  CLI rejects passing both.

Validation

• tsc --noEmit against the entire src/ tree: passing.
• prettier --check src/fastlane_cli.ts --parser typescript: passing.
• Every flag in the spec maps 1:1 to an option declared in the
  matching lib/src/cli/*_command.dart upstream (drift-checked).

Sibling PR

Mirrored in the source-of-truth repo:
bthnkucuk/fastlane_cli#6.

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[withfig-bot]

Overview

src/fastlane_cli.ts:

Info:

[withfig-bot]

Hello @bthnkucuk,
thank you very much for creating a Pull Request!
Here is a small checklist to get this PR merged as quickly as possible:

• Do all subcommands / options which take arguments include the args property (args: {})?
• Are all options modular? E.g. -a -u -x instead of -aux
• Have all other checks passed?

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