feat/updated CLI to allow for model selection & submitting API keys (#1430)

* updated CLI to allow for submitting API keys

* updated click prompt to remove default number

* removed all unnecessary comments

* feat: implement crew creation CLI command

- refactor code to multiple functions
- Added ability for users to select provider and model when uing crewai create command and ave API key to .env

* refactered select_choice function for early return

* refactored  select_provider to have an ealry return

* cleanup of comments

* refactor/Move functions into utils file, added new provider file and migrated fucntions thre, new constants file + general function refactor

* small comment cleanup

* fix unnecessary deps

---------

Co-authored-by: Brandon Hancock (bhancock_ai) <109994880+bhancockio@users.noreply.github.com>
Co-authored-by: Brandon Hancock <brandon@brandonhancock.io>

src/crewai/cli/constants.py

@@ -0,0 +1,19 @@
+ENV_VARS = {
+    'openai': ['OPENAI_API_KEY'],
+    'anthropic': ['ANTHROPIC_API_KEY'],
+    'gemini': ['GEMINI_API_KEY'],
+    'groq': ['GROQ_API_KEY'],
+    'ollama': ['FAKE_KEY'],
+}
+
+PROVIDERS = ['openai', 'anthropic', 'gemini', 'groq', 'ollama']
+
+MODELS = {
+    'openai': ['gpt-4', 'gpt-4o', 'gpt-4o-mini', 'o1-mini', 'o1-preview'],
+    'anthropic': ['claude-3-5-sonnet-20240620', 'claude-3-sonnet-20240229', 'claude-3-opus-20240229', 'claude-3-haiku-20240307'],
+    'gemini': ['gemini-1.5-flash', 'gemini-1.5-pro', 'gemini-gemma-2-9b-it', 'gemini-gemma-2-27b-it'],
+    'groq': ['llama-3.1-8b-instant', 'llama-3.1-70b-versatile', 'llama-3.1-405b-reasoning', 'gemma2-9b-it', 'gemma-7b-it'],
+    'ollama': ['llama3.1', 'mixtral'],
+}
+
+JSON_URL = "https://raw.githubusercontent.com/BerriAI/litellm/main/model_prices_and_context_window.json"