[HIPIFY][cmake][#1571] Take into account building hipify-clang as a part of building HIP while installing

[Algorithm]
  [Release]
    If CMAKE_INSTALL_PREFIX is set by the user:
       If BIN_INSTALL_DIR is set by HIP, use it as CMAKE_INSTALL_PREFIX, otherwise CMAKE_INSTALL_PREFIX is used unchanged.
    If the user does not set CMAKE_INSTALL_PREFIX (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT):
       If BIN_INSTALL_DIR is set by HIP, use it as CMAKE_INSTALL_PREFIX, otherwise use PROJECT_BINARY_DIR/bin for installation.
  [Debug]
    If CMAKE_INSTALL_PREFIX is set by the user:
       CMAKE_INSTALL_PREFIX is used unchanged.
    If the user does not set CMAKE_INSTALL_PREFIX (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT):
       use CMAKE_CURRENT_SOURCE_DIR/bin for installation.

Standalone build left unchanged: CMAKE_INSTALL_PREFIX is used if set.

hipify-clang/CMakeLists.txt

@@ -80,11 +80,28 @@ endif()
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EXTRA_CFLAGS} ${StdCpp} -DHIPIFY_CLANG_RES=\\\"${LLVM_LIBRARY_DIRS}/clang/${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}\\\"")
 
+set(INSTALL_PATH_DOC_STRING "Installation path for hipify-clang")
+if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+    if(CMAKE_BUILD_TYPE MATCHES Debug)
+        set(CMAKE_INSTALL_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/bin" CACHE PATH ${INSTALL_PATH_DOC_STRING} FORCE)
+    elseif(CMAKE_BUILD_TYPE MATCHES Release)
+        if (BIN_INSTALL_DIR)
+            set(CMAKE_INSTALL_PREFIX "${BIN_INSTALL_DIR}" CACHE PATH ${INSTALL_PATH_DOC_STRING} FORCE)
+        else()
+            set(CMAKE_INSTALL_PREFIX "${PROJECT_BINARY_DIR}/bin" CACHE PATH ${INSTALL_PATH_DOC_STRING} FORCE)
+        endif()
+    else()
+        message(FATAL_ERROR "Invalid CMAKE_BUILD_TYPE specified. Valid values are Debug and Release")
+    endif()
+elseif(BIN_INSTALL_DIR)
+    set(CMAKE_INSTALL_PREFIX "${BIN_INSTALL_DIR}" CACHE PATH ${INSTALL_PATH_DOC_STRING} FORCE)
+endif()
+
 install(TARGETS hipify-clang DESTINATION ${CMAKE_INSTALL_PREFIX})
 
 install(
   DIRECTORY ${LLVM_DIR}/../../clang/${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}/
-  DESTINATION  ${CMAKE_INSTALL_PREFIX}
+  DESTINATION ${CMAKE_INSTALL_PREFIX}
   COMPONENT clang-resource-headers
   FILES_MATCHING
   PATTERN "*.h"