Create FullArchiveSearchDemo.java

[Rahulchaube1]

Changes Made:
Error Handling:

Added proper error handling to ensure the program doesn't crash unexpectedly.
Included checks for the bearerToken to ensure it is not null or empty.
Added max_results Parameter:

Added max_results to limit the number of results returned. Adjust it as per your requirements (e.g., 10, 50, or 100).
Improved Readability:

Added comments to clarify each section of the code.
Improved formatting for better readability.
Enhanced Logging:

Included error messages and stack trace printing to help debug potential issues.
Default Content-Type:

Set the Content-Type header explicitly to application/json to match API requirements.
Usage:
Ensure you have the Twitter API v2 Bearer Token set as an environment variable (BEARER_TOKEN).
Run the code. It will search tweets using the Full Archive Search endpoint based on the provided query. Adjust the query as needed.

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