docs: Added MindsDB provider (#20322)

MindsDB integrates with LangChain, enabling users to deploy, serve, and
fine-tune models available via LangChain within MindsDB, making them
accessible to numerous data sources.

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Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>

docs/docs/integrations/providers/mindsdb.mdx

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+# MindsDB
+
+MindsDB is the platform for customizing AI from enterprise data. With MindsDB and it's nearly 200 integrations to [data sources](https://docs.mindsdb.com/integrations/data-overview) and [AI/ML frameworks](https://docs.mindsdb.com/integrations/ai-overview), any developer can use their enterprise data to customize AI for their purpose, faster and more securely.
+
+With MindsDB, you can connect any data source to any AI/ML model to implement and automate AI-powered applications. Deploy, serve, and fine-tune models in real-time, utilizing data from databases, vector stores, or applications. Do all that using universal tools developers already know.
+
+MindsDB integrates with LangChain, enabling users to:
+
+
+- Deploy models available via LangChain within MindsDB, making them accessible to numerous data sources.
+- Fine-tune models available via LangChain within MindsDB using real-time and dynamic data.
+- Automate AI workflows with LangChain and MindsDB.
+
+Follow [our docs](https://docs.mindsdb.com/integrations/ai-engines/langchain) to learn more about MindsDB’s integration with LangChain and see examples.