docs: refactor Overview into several files (#8543)

docs/products/prowler-cli.md

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+Prowler CLI is a command-line interface for running Prowler scans from the terminal.
+
+```console
+prowler <provider>
+```
+![Prowler CLI Execution](../img/short-display.png)
+
+## Prowler Dashboard
+
+```console
+prowler dashboard
+```
+![Prowler Dashboard](img/dashboard.png)
+
+Prowler includes hundreds of security controls aligned with widely recognized industry frameworks and standards, including:
+
+- CIS Benchmarks (AWS, Azure, Microsoft 365, Kubernetes, GitHub)
+- NIST SP 800-53 (rev. 4 and 5) and NIST SP 800-171
+- NIST Cybersecurity Framework (CSF)
+- CISA Guidelines
+- FedRAMP Low & Moderate
+- PCI DSS v3.2.1 and v4.0
+- ISO/IEC 27001:2013 and 2022
+- SOC 2
+- GDPR (General Data Protection Regulation)
+- HIPAA (Health Insurance Portability and Accountability Act)
+- FFIEC (Federal Financial Institutions Examination Council)
+- ENS RD2022 (Spanish National Security Framework)
+- GxP 21 CFR Part 11 and EU Annex 11
+- RBI Cybersecurity Framework (Reserve Bank of India)
+- KISA ISMS-P (Korean Information Security Management System)
+- MITRE ATT&CK
+- AWS Well-Architected Framework (Security & Reliability Pillars)
+- AWS Foundational Technical Review (FTR)
+- Microsoft NIS2 Directive (EU)
+- Custom threat scoring frameworks (prowler_threatscore)
+- Custom security frameworks for enterprise needs