[FEATURE] expert(s) - eg. linux/privesc/mitigations/remediations

Should probably add "expert" related skills that utilize tools. they should have domain specific knowledge
The following is an example linux privesc / exploitation SKILL.md skill request
## Feature Type
- [x] New skill request

## Description

A Linux system exploitation and privilege escalation skill that provides automated enumeration, vulnerability identification, and exploitation guidance for offensive security operations on Linux systems.

## Use Case

**Problem it solves:**
Automates Linux post-exploitation enumeration, identifies privilege escalation vectors, and suggests exploitation techniques for penetration testing and red team operations.

**Target users:**
Penetration testers, red team operators, security researchers, CTF players

**Security context:**
Post-exploitation phase of penetration tests

## For New Skill Requests

**Proposed Tool:** LinPEAS (Linux Privilege Escalation Awesome Script) + Manual enumeration commands

**Tool Repository/Documentation:**
- https://github.com/carlospolop/PEASS-ng/tree/master/linPEAS
- https://book.hacktricks.xyz/linux-hardening/privilege-escalation

**Category:** `offsec` (offensive security)

**Security Frameworks:** MITRE ATT&CK (TA0004 - Privilege Escalation, TA0007 - Discovery)

**Key Capabilities:**
- System enumeration (kernel, OS, architecture)
- SUID/SGID binary identification
- Sudo misconfigurations detection
- Capabilities abuse vectors
- Cron job exploitation paths
- Writable service files discovery
- Password hunting (history, configs, logs)
- Network configuration analysis
- Container breakout detection

## Expected Workflow

1. **Initial access gained** → Agent executes enumeration
2. **LinPEAS scan** → Identifies privilege escalation vectors
3. **Risk prioritization** → Ranks findings by exploitability
4. **Exploitation guidance** → Provides specific commands/techniques
5. **Verification** → Tests privilege escalation success

**Example Commands:**
```bash
# Automated scan
linpeas.sh -a > linpeas_report.txt

# Manual checks
find / -perm -4000 -type f 2>/dev/null # SUID binaries
sudo -l # Sudo permissions
getcap -r / 2>/dev/null # Capabilities
```

## Alternatives Considered

1. **LinEnum** - Older, less maintained
2. **Linux Smart Enumeration (LSE)** - Good but less comprehensive
3. **Unix-privesc-check** - Outdated
4. **Manual enumeration scripts** - Time-consuming, inconsistent

**Why LinPEAS:**
- ✅ Most comprehensive (checks 200+ vectors)
- ✅ Actively maintained
- ✅ Color-coded severity ratings
- ✅ GTFOBins integration
- ✅ Container-aware

## Additional Context

**Critical skill components:**
- Kernel exploit detection (CVE mapping)
- Service misconfigurations (MySQL, Docker, systemd)
- NFS shares with no_root_squash
- Wildcard injection opportunities
- LD_PRELOAD/LD_LIBRARY_PATH hijacking
- PATH manipulation vectors

**Safety considerations:**
- Non-destructive enumeration only
- Logging of all actions

**Output formats:**
- Parseable JSON for tool integration
- Human-readable reports
- MITRE ATT&CK technique mapping
- able to be ingested into different skills/tools

## Willingness to Contribute
- [x] I am willing to submit a PR for this feature
- [x] I can help test this feature
- [x] I can provide domain expertise/guidance