documentation install OpenJPH (AcademySoftwareFoundation#2099)

* documentation install OpenJPH

Signed-off-by: Todica Ionut <[email protected]>

* Mention that openjph is v3.4

Signed-off-by: Cary Phillips <[email protected]>

---------

Signed-off-by: Todica Ionut <[email protected]>
Signed-off-by: Cary Phillips <[email protected]>
Co-authored-by: Cary Phillips <[email protected]>

Author: TodicaIonut

website/install.rst

@@ -89,6 +89,7 @@ Make sure these are installed on your system before building OpenEXR:
 * C++ compiler that supports C++17
 * Imath (auto fetched by CMake if not found) (https://github.com/AcademySoftwareFoundation/openexr)
 * libdeflate source code (auto fetched by CMake if not found) (https://github.com/ebiggers/libdeflate)
+* openjph (auto fetched by CMake if not found; new in v3.4, not yet released) (https://github.com/aous72/OpenJPH)
 * (optional) Intel's Thread Building Blocks library (TBB)
 
 The instructions that follow describe building OpenEXR with CMake.