Add command line parameters. Fixes #30 (#89)

* Add command line parameters. Fixes #30

* Fixed compile errors

* Fixed code review findings

* Fixed code review findings, take 2

app/app.pro

@@ -97,6 +97,8 @@ SOURCES += \
     backend/nvpairingmanager.cpp \
     backend/computermanager.cpp \
     backend/boxartmanager.cpp \
+    cli/commandlineparser.cpp \
+    cli/startstream.cpp \
     settings/streamingpreferences.cpp \
     streaming/input.cpp \
     streaming/session.cpp \
@@ -115,6 +117,8 @@ HEADERS += \
     backend/nvpairingmanager.h \
     backend/computermanager.h \
     backend/boxartmanager.h \
+    cli/commandlineparser.h \
+    cli/startstream.h \
     settings/streamingpreferences.h \
     streaming/input.hpp \
     streaming/session.hpp \