feat: Lead Departure Alert (#1302)

* init

* fix

* event

* UI

* events..for real

* SP

* ugh

* toggles

* read params first

* stoopid it is

* fix green light img

* fix green light image. for real this time

* move events to longitudinal_planner

* move events to longitudinal_planner

* move e2e alerts to separate class

* fix

* fixxxxxxx

* blinky blink

* blinky blink

* refactor

* more refactor

---------

Co-authored-by: Kumar <36933347+rav4kumar@users.noreply.github.com>
Co-authored-by: Jason Wen <haibin.wen3@gmail.com>

common/params_keys.h

@@ -154,6 +154,7 @@ inline static std::unordered_map<std::string, ParamKeyAttributes> keys = {
     {"InteractivityTimeout", {PERSISTENT | BACKUP, INT, "0"}},
     {"IsDevelopmentBranch", {CLEAR_ON_MANAGER_START, BOOL}},
     {"LastGPSPositionLLK", {PERSISTENT, STRING}},
+    {"LeadDepartAlert", {PERSISTENT | BACKUP, BOOL, "0"}},
     {"MaxTimeOffroad", {PERSISTENT | BACKUP, INT, "1800"}},
     {"ModelRunnerTypeCache", {CLEAR_ON_ONROAD_TRANSITION, INT}},
     {"OffroadMode", {CLEAR_ON_MANAGER_START, BOOL}},