🌍 [FEATURE] Localization System and Language-Based Issue Filtering

# 🌍 Localization System and Language-Based Issue Filtering

## Problem
OpenMatch doesn't consider the user's native language, creating a barrier for Brazilian developers who prefer issues in Portuguese.

## Proposed Solution

### 1. **Automatic Detection**
- Automatically identify user's country and language
- Detect if user is Brazilian through browser/IP

### 2. **Smart Issue Filtering**
- Prioritize issues that mention "português", "portuguese" or related terms
- Show Portuguese issues first for Brazilian users
- Implement optional filter to see only Portuguese issues

### 3. **Multilingual Interface**
- Add support for Portuguese, English and Spanish
- Language selector in the interface
- Translate interface texts

## Benefits
- **For Brazilian users**: More accessible issues in Portuguese
- **For the project**: Higher engagement and user retention
- **For the community**: More developers can contribute

## How to Contribute

### For Frontend Developers:
- Implement browser language detection
- Create language selector component
- Implement translation system

### For Backend Developers:
- Modify queries to filter by language
- Implement scoring system for prioritization
- Add language fields to database

### For Designers:
- Create icons for language indicators
- Improve language selector UX
- Adapt layout for multilingual texts

## Implementation
Can be implemented in phases:
1. Basic location detection
2. Language filters in queries
3. Multilingual interface

## Labels
- `enhancement`
- `good first issue`
- `localization`