CLI Event Query Tool

[DokaIzk]

Title: feat: create CLI tool for querying events locally

Labels: tooling sdk
Complexity: medium

Description:
Create standalone CLI tool for developers to query events:

soroscan events --contract ABC123 --event-type transfer --limit 10
soroscan webhooks list
soroscan webhooks test <webhook-id>

Acceptance Criteria:

• CLI tool with subcommands
• Events, webhooks, contracts operations
• Output in table/JSON formats
• Installed as pip package

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