Install all nextpnr dependencies in share directory

Signed-off-by: Tobias Müller <Tobias_Mueller@twam.info>

libtrellis/CMakeLists.txt

diff --git a/libtrellis/CMakeLists.txt b/libtrellis/CMakeLists.txt
index ff88d0a..7f00324 100644
--- a/libtrellis/CMakeLists.txt
+++ b/libtrellis/CMakeLists.txt
@@ -143,3 +143,6 @@
 endif()
 install(DIRECTORY ../database DESTINATION share/trellis PATTERN ".git" EXCLUDE)
 install(DIRECTORY ../misc DESTINATION share/trellis)
+install(DIRECTORY ../util/common DESTINATION share/trellis/util)
+install(DIRECTORY ../timing/util DESTINATION share/trellis/timing)
+install(TARGETS pytrellis DESTINATION share/trellis/libtrellis)