* Install sqlite3.exe as part of sqlite3 port
- Modeled after the bzip2 port: If SQLITE3_SKIP_TOOLS is not
set, build and install sqlite3.exe as part of the sqlite3
package. sqlite3.dll must also be copied to the tools folder
for sqlite3.exe to be able to launch.
- Tested on Windows RS3 with VS 2017 15.5.2.
* [sqlite3] Separate into tool feature