analysis.lami: Use the openResource command to open reports

analysis.lami: Use the openResource command to open reports

Instead of defining our own command, we can hook into the
Eclipse-provided org.eclipse.ui.navigate.openResource command,
so that the reports can then be opened using the usual
keybindings to open resources.

Also hook it into OpenAction so that Enter and double-click
opens the report.

Bug: 493941

Change-Id: I4c546b60a77c2d531c8c9f18961984e5962ef56f
Signed-off-by: Alexandre Montplaisir <alexmonthy@efficios.com>
Reviewed-on: https://git.eclipse.org/r/74569
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-by: Hudson CI