Add Debian packaging support for wolfPKCS11

Summary

This PR adds comprehensive Debian packaging support for wolfPKCS11, enabling the creation of .deb packages for easy installation and distribution. The implementation creates two packages (libwolfpkcs11 and libwolfpkcs11-dev).

Key additions:

• Complete debian/ directory with control files, changelog, and copyright
• Build targets make deb (local)
• GitHub Action workflow for automated testing of debian package builds
• Integration into the autotools build system with wolfSSL dependency handling

⚠️ Important dependency note: This implementation required rebuilding wolfSSL with specific flags (--enable-aescfb --enable-cryptocb --enable-rsapss --enable-keygen --enable-pwdbased --enable-scrypt C_EXTRA_FLAGS="-DWOLFSSL_PUBLIC_MP -DWC_RSA_DIRECT") to resolve linking issues with single precision math functions.

Review & Testing Checklist for Human

• Test package creation locally: Run make deb to verify .deb packages are created successfully
• Test package installation: Install the generated .deb files on a clean Ubuntu system and verify functionality
• Verify wolfSSL dependency handling: Test in environments where wolfSSL may not have the required build flags
• Verify GitHub Action workflow: Check that the new debian-package-test.yml workflow runs successfully in CI
• Test existing workflows: Ensure normal make, make check, and other existing build processes still work

Recommended Test Plan:

1. Clone repository to fresh system
2. Run make deb and verify two .deb packages are created
3. Install packages with sudo dpkg -i *.deb and test functionality
4. Verify GitHub Action runs without errors in CI

Diagram

%%{ init : { "theme" : "default" }}%%
graph TB
    subgraph "wolfPKCS11 Repository"
        MA["Makefile.am"]:::major-edit
        subgraph "debian/"
            DC["control.in"]:::major-edit
            DCO["control"]:::major-edit
            DI["include.am"]:::major-edit
            DCL["changelog"]:::major-edit
            DCR["copyright"]:::major-edit
        end
        subgraph "Docker/"
            DIN["include.am"]:::major-edit
            DF["packaging/debian/<br/>Dockerfile"]:::major-edit
        end
        subgraph ".github/workflows/"
            GHA["debian-package-test.yml"]:::major-edit
        end
    end
    
    subgraph "External Dependencies"
        WS["wolfSSL library<br/>(specific build flags required)"]:::context
    end
    
    subgraph "Build Targets"
        DB["make deb"]:::major-edit
        DDB["make deb-docker"]:::major-edit
    end
    
    MA --> DI
    MA --> DIN
    DI --> DB
    DI --> DDB
    DF --> DDB
    DC --> DB
    WS --> DB
    GHA --> DB
    GHA --> DDB
    
    subgraph Legend
        L1["Major Edit"]:::major-edit
        L2["Minor Edit"]:::minor-edit
        L3["Context/No Edit"]:::context
    end
    
    classDef major-edit fill:#90EE90
    classDef minor-edit fill:#87CEEB
    classDef context fill:#F5F5F5

Notes

• The debian packaging structure is based on wolfSSL's existing implementation for consistency
• Package metadata follows Debian policy standards with proper dependency declarations
• The GitHub Action workflow tests both local and containerized builds plus installation verification
• Critical: wolfSSL must be built with specific flags for wolfPKCS11 compatibility - this may require documentation updates

Link to Devin run: https://app.devin.ai/sessions/d206417ddb084b8b8270c94e0806c312
Requested by: [email protected]