feat: finish basic packer

- finish basic packer
- add basic jinja2 template

packer/src/sarasacw_omrf_packer/templates/XXXConfig.cmake.jinja

@@ -0,0 +1,23 @@
+{# Get the path to directory where current XXXConfig.cmake file is (i.e. /path/to/installation/lib/cmake/XXX) -#}
+get_filename_component(PACKAGE_CMAKE_CONFIG_PATH "${CMAKE_CURRENT_LIST_FILE}" PATH)
+
+{# Compute installation root directory (back to parent 3 times, i.e. /path/to/installation) -#}
+get_filename_component(PACKAGE_PREFIX_DIR "${PACKAGE_CMAKE_CONFIG_PATH}/../../../" ABSOLUTE)
+
+{# Setup library and header file paths -#}
+set(MyRust_LIBRARY "${PACKAGE_PREFIX_DIR}/lib/ {{- artifact_filename -}} }")
+set(MyRust_INCLUDE_DIR "${PACKAGE_PREFIX_DIR}/include")
+
+{# Create modern CMake target (IMPORTED target) -#}
+add_library(MyRust::MyRust SHARED IMPORTED)
+set_target_properties(MyRust::MyRust PROPERTIES
+    IMPORTED_LOCATION "${MyRust_LIBRARY}"
+    INTERFACE_INCLUDE_DIRECTORIES "${MyRust_INCLUDE_DIR}"
+)
+
+{# Handle the Windows-specific case that .dll is seperated with .lib -#}
+if(WIN32)
+    set_target_properties(MyRust::MyRust PROPERTIES
+        IMPORTED_IMPLIB "${PACKAGE_PREFIX_DIR}/lib/myrust.lib"
+    )
+endif()

packer/src/sarasacw_omrf_packer/templates/XXXConfigVersion.cmake.jinja

@@ -0,0 +1,14 @@
+{# Setup package version -#}
+set(PACKAGE_VERSION "1.2.3") # TODO: replace with jinja argument
+
+{# Check whether user request EXACT match -#}
+if(PACKAGE_FIND_VERSION_EXACT)
+    if(NOT "${PACKAGE_VERSION}" VERSION_EQUAL "${PACKAGE_FIND_VERSION}")
+        set(PACKAGE_VERSION_UNSUPPORTED TRUE)
+    endif()
+else()
+    {# Check whether user requested version is <= current version (compatible with new version) -#}
+    if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}")
+        set(PACKAGE_VERSION_UNSUPPORTED TRUE)
+    endif()
+endif()