feat(*): switched to spdlog for logging and organized headers (#1183)

* feat: updated PKGBUILD description
* feat: updated workflow syntax and dependencies
* feat: switched logging to spdlog
* chore: adjusted library defaults
* ci: fixed spdlog format string issues
* docs: fixed docs for libvideo2x functions
* feat: organized header files
* fix: fixed header installation directory
* feat: link spdlog statically if compiled from source
* feat: adjusted libvideo2x log level enum names
* feat: added version.h header

Signed-off-by: k4yt3x <i@k4yt3x.com>

.github/workflows/build.yml

@@ -6,6 +6,7 @@ on:
       - dev
   pull_request: {}
   workflow_dispatch: {}
+
 jobs:
   ubuntu:
     runs-on: ubuntu-latest
@@ -33,7 +34,7 @@ jobs:
       - name: Build Video2X
         run: |
           mkdir -p /tmp/build /tmp/install
-          cmake -B /tmp/build -S . -DUSE_SYSTEM_NCNN=OFF \
+          cmake -B /tmp/build -S . -DUSE_SYSTEM_NCNN=OFF -DUSE_SYSTEM_SPDLOG=OFF \
             -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ \
             -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/tmp/install \
             -DINSTALL_BIN_DESTINATION=. -DINSTALL_INCLUDE_DESTINATION=include \
@@ -44,6 +45,7 @@ jobs:
         with:
           name: video2x-nightly-linux-amd64
           path: /tmp/install
+
   windows:
     runs-on: windows-latest
     steps:
@@ -73,7 +75,7 @@ jobs:
           Rename-Item -Path "third_party/ncnn-$ncnnVersion-windows-vs2022-shared" -NewName ncnn-shared
       - name: Build Video2X
         run: |
-          cmake -S . -B build -DUSE_SYSTEM_NCNN=OFF -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=build/video2x_install
+          cmake -S . -B build -DUSE_SYSTEM_NCNN=OFF -DUSE_SYSTEM_SPDLOG=OFF -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=build/video2x_install
           cmake --build build --config Debug --parallel --target install
       - name: Upload artifacts
         uses: actions/upload-artifact@v4