git: Add option to customize pattern language repo and git hash with workflow call

.github/workflows/tests.yml

@@ -8,6 +8,11 @@ on:
   repository_dispatch:
     types: [run_tests]
   workflow_call:
+    inputs:
+      pattern_language_git_repo:
+        type: string
+      pattern_language_git_hash:
+        type: string
 
 jobs:
   tests:
@@ -63,6 +68,8 @@ jobs:
           -DIMHEX_PATTERNS_ENABLE_UNIT_TESTS=ON           \
           -DLIBPL_ENABLE_TESTS=OFF                        \
           -DLIBPL_ENABLE_CLI=OFF                          \
+          -DIMHEX_PATTERNS_LIBPL_GIT_REPO="${{ inputs.pattern_language_git_repo }}" \
+          -DIMHEX_PATTERNS_LIBPL_GIT_HASH="${{ inputs.pattern_language_git_hash }}" \
           -G Ninja                                        \
           ..
         ninja unit_tests

CMakeLists.txt

@@ -16,10 +16,22 @@ endif()
 if(NOT TARGET libpl)
     include(FetchContent)
 
+    if (NOT DEFINED DIMHEX_PATTERNS_LIBPL_GIT_REPO OR DIMHEX_PATTERNS_LIBPL_GIT_REPO STREQUAL "")
+        set(LIBPL_GIT_REPO "https://github.com/WerWolv/PatternLanguage")
+    else()
+        set(LIBPL_GIT_REPO ${DIMHEX_PATTERNS_LIBPL_GIT_REPO})
+    endif()
+
+    if (NOT DEFINED IMHEX_PATTERNS_LIBPL_GIT_HASH OR IMHEX_PATTERNS_LIBPL_GIT_HASH STREQUAL "")
+        set(LIBPL_GIT_TAG "master")
+    else()
+        set(LIBPL_GIT_TAG ${IMHEX_PATTERNS_LIBPL_GIT_HASH})
+    endif()
+
     FetchContent_Declare(
         pattern_language
-        GIT_REPOSITORY      https://github.com/WerWolv/PatternLanguage
-        GIT_TAG             master
+        GIT_REPOSITORY      ${LIBPL_GIT_REPO}
+        GIT_TAG             ${LIBPL_GIT_TAG}
     )
 
     FetchContent_MakeAvailable(pattern_language)