[reMarkable] Don't use KOReader suspend/screensaver/autosuspend when Oxide is running (#8900)

* Ignore hardware sleep button

When running KOReader with a launcher, having the power button trigger the Power event conflicts with the launcher's built-in screensaver (see https://github.com/koreader/koreader/issues/8891). This commit ignores the hardware power button in KOReader and lets the launcher handle sleep and wake normally.

* Disable autosuspend

If a launcher is active, there will be no way to un-suspend because the power button is ignored by KOReader and handled by the launcher.

* Ignore power button only if Oxide is running

Same with disabling auto suspend

frontend/device/remarkable/device.lua

@@ -1,5 +1,6 @@
 local Generic = require("device/generic/device") -- <= look at this file!
 local TimeVal = require("ui/timeval")
+local PluginShare = require("pluginshare")
 local logger = require("logger")
 local ffi = require("ffi")
 local C = ffi.C
@@ -112,12 +113,28 @@ end
 
 
 function Remarkable:init()
+    local oxide_running = os.execute("systemctl is-active --quiet tarnish") == 0
+    logger.info(string.format("Oxide running?: %s", oxide_running))
+
+    -- experiment
+    -- logger.info("PPID:")
+    -- local parent_process = os.execute("echo $PPID")
+    -- os.execute("ps | grep $PPID")
+    -- logger.info(string.format("parent proccess is oxide?: %s", parent_process_is_oxide))
+
     self.screen = require("ffi/framebuffer_mxcfb"):new{device = self, debug = logger.dbg}
     self.powerd = require("device/remarkable/powerd"):new{
         device = self,
         capacity_file = self.battery_path,
         status_file = self.status_path,
     }
+
+    local event_map = require("device/remarkable/event_map")
+    -- If we are launched while Oxide is running, remove Power from the event map
+    if oxide_running then
+        event_map[116] = nil
+    end
+
     self.input = require("device/input"):new{
         device = self,
         event_map = require("device/remarkable/event_map"),
@@ -140,6 +157,11 @@ function Remarkable:init()
     self.screen.native_rotation_mode = rotation_mode
     self.screen.cur_rotation_mode = rotation_mode
 
+    if oxide_running then
+        -- Disable autosuspend on this device
+        PluginShare.pause_auto_suspend = true
+    end
+
     Generic.init(self)
 end
 
@@ -212,3 +234,4 @@ if isRm2 then
 else
     return Remarkable1
 end
+