Update README and env examples (#72)

* chore: Update .env.template with new API keys and tool configurations

- Added new environment variables for LLM provider and model, Mapbox access token, and various API keys for Messari, Thirdweb, CoinMarketCap, Air Quality, and Depin Ninja.
- Updated tool selection instructions to clarify usage of specialty tools.
- Enhanced documentation within the .env.template for better guidance on API key usage and tool availability.

* docs: Update README.md for improved clarity and accuracy

- Enhanced the LLM Integration section to specify supported LLM providers, including OpenAI, Anthropic, and DeepSeek.
- Updated the architecture diagram to reflect the new ElizoOS Stack and Quicksilver System structure.
- Clarified the configuration structure and instance management instructions for better user guidance.
- Improved the available tools section by adding new tools and their parameters, ensuring comprehensive documentation.

* docs: Update README.md to enhance API reference and clarity

- Added API reference section detailing REST endpoints for interacting with the Sentient AI system, including base URL, authentication, and endpoint descriptions.
- Improved clarity in the available tools section by standardizing quotes and ensuring consistent formatting throughout the document.
- Expanded on the integration of DePIN network and custom tools, inviting contributors to enhance the project further.

* docs: Add Table of Contents to README.md for improved navigation

- Introduced a comprehensive Table of Contents section to enhance user navigation through the README.
- Organized links to key sections including Features, Architecture, Getting Started, API Reference, and Contributing, ensuring better accessibility to important information.

* docs: Update README.md architecture diagram for clarity

- Refined the architecture diagram by simplifying node labels for better readability.
- Removed unnecessary emojis and standardized names to enhance clarity and maintainability.

* docs: Revise README.md for improved structure and clarity

- Updated the Table of Contents for better navigation, reorganizing sections for logical flow.
- Enhanced the API Reference section with detailed endpoint descriptions and examples.
- Added new sections for Integrations and Future Development to invite community contributions and outline potential growth areas.
- Improved formatting and consistency throughout the document to enhance readability and maintainability.

* docs: Simplify response structure in README.md

- Updated the API response example to clarify the format of tool-specific response data.
- Removed unnecessary comments to enhance readability and maintainability of the documentation.

Author: nicky-ru

.env.template

@@ -1,24 +1,28 @@
+LLM_PROVIDER=your_llm_provider # openai, anthropic, deepseek
+LLM_MODEL=your_llm_model # gpt-4o, gpt-4o-mini, claude-3-5-sonnet-latest, deepseek-chat...
+
 DEEPSEEK_API_KEY=your_deepseek_api_key
 ANTHROPIC_API_KEY=your_anthropic_api_key
 OPENAI_API_KEY=your_openai_api_key
 
-FAST_LLM_MODEL=your_llm_model
-LLM_MODEL=your_llm_model
-
 API_V2_KEY=your_api_v2_key # for iotex l1 data
 
 # Tool Selection
-# Available tools: news, weather-current, weather-forecast, depin-metrics, depin-projects, l1data, dimo, nuclear
-ENABLED_TOOLS=news,weather-current,weather-forecast,depin-metrics,depin-projects,l1data,dimo,nuclear
+# Available tools: choose one specialty tool or use ask_specialty to let the LLM to choose the best tool
+# full list of tools in src/registry/toolNames.ts
+ENABLED_TOOLS=ask_specialty
 
 # NUBILA
 NUBILA_API_KEY=
 
 # NEWSAPI
 NEWSAPI_API_KEY=
 
-# DEPIN
-DEPIN_API_KEY=
+# MAPBOX
+MAPBOX_ACCESS_TOKEN=
+
+# IoTeX Analytics API
+# How to get API_V2_KEY: https://docs.iotex.io/builders/web3-development/chain-indexing/iotex-analytics-api
 API_V2_KEY=
 
 # DIMO
@@ -30,5 +34,25 @@ PRIVILEGED_ADDRESS=
 # GOV
 EIA_API_KEY=
 
+# Messari
+MESSARI_API_KEY=
+
+# Thirdweb
+THIRDWEB_SECRET_KEY=
+THIRDWEB_SESSION_ID=
+
+# CoinMarketCap
+CMC_API_KEY=
+
+# Air Quality
+AIRVISUAL_API_KEY=
+
+# Depin Ninja
+DEPINNINJA_API_KEY=
+
 # Server Configuration
-PORT=8000 
+PORT=8000 
+
+# Directives for the LLM
+# Default: "You're a helpful assistant that can answer questions and help with tasks. You are also able to use tools to get information."
+SYSTEM_PROMPT=