Replace plymouth theme

Summary:
Replace the old Lubuntu plymouth theme with the current plymouth spinner theme.
Use the artwork provided by Jacob Sawicki.
Ref T131

Test Plan:
1. Install the package.
2. Reboot and check, that the plymouth theme has changed and is working flickerless.

Reviewers: wxl, tsimonq2, kc2bez, The_LoudSpeaker, hmollercl

Reviewed By: kc2bez

Maniphest Tasks: T131

Differential Revision: https://phab.lubuntu.me/D97

debian/changelog

@@ -1,3 +1,17 @@
+lubuntu-artwork (20.10.1) groovy; urgency=medium
+
+  [ Jacob Sawicki ]
+  * Created artwork for the Lubuntu spinner theme.
+
+  [ apt-ghetto ]
+  * Welcome to the Groovy Gorilla
+  * Changed the Lubuntu plymouth theme:
+    - Changed plymouth-theme-lubuntu-logo to use the Ubuntu spinner theme 
+      (LP: #1872669)
+    - Updated plymouth-theme-lubuntu-text to print actual release version.
+
+ -- apt-ghetto <apt-ghetto@lubuntu.me>  Sat, 11 Jul 2020 11:42:02 +0200
+
 lubuntu-artwork (20.04.3) focal; urgency=medium
 
   * Add wallpapers from wallpaper contest.

debian/control

@@ -23,6 +23,7 @@ Package: plymouth-theme-lubuntu-logo
 Architecture: all
 Depends: plymouth (>= 0.9.2-3ubuntu1~),
          plymouth-label,
+	 plymouth-theme-spinner,
          ${misc:Depends},
          ${shlibs:Depends}
 Provides: plymouth-theme

src/usr/share/plymouth/themes/lubuntu-logo/bgrt/bgrt.plymouth

@@ -0,0 +1,54 @@
+[Plymouth Theme]
+Name=BGRT
+Description=Jimmac's spinner theme using the ACPI BGRT graphics as background, modified by Lubuntu with artwork from Jacob Sawicki
+ModuleName=two-step
+
+[two-step]
+Font=Ubuntu 12
+TitleFont=Ubuntu Light 30
+ImageDir=/usr/share/plymouth/themes/lubuntu-logo/spinner
+DialogHorizontalAlignment=.5
+DialogVerticalAlignment=.7
+TitleHorizontalAlignment=.5
+TitleVerticalAlignment=.382
+HorizontalAlignment=.5
+VerticalAlignment=.7
+WatermarkHorizontalAlignment=.5
+WatermarkVerticalAlignment=.96
+Transition=none
+TransitionDuration=0.0
+BackgroundStartColor=0x0078c2
+BackgroundEndColor=0x0078c2
+ProgressBarBackgroundColor=0x600000
+ProgressBarForegroundColor=0xffffff
+DialogClearsFirmwareBackground=false
+MessageBelowAnimation=true
+
+[boot-up]
+UseEndAnimation=false
+UseFirmwareBackground=true
+
+[shutdown]
+UseEndAnimation=false
+UseFirmwareBackground=true
+
+[updates]
+SuppressMessages=true
+ProgressBarShowPercentComplete=true
+UseProgressBar=true
+_Title=Installing Updates...
+_SubTitle=Do not turn off your computer
+
+[system-upgrade]
+SuppressMessages=true
+ProgressBarShowPercentComplete=true
+UseProgressBar=true
+_Title=Upgrading System...
+_SubTitle=Do not turn off your computer
+
+[firmware-upgrade]
+SuppressMessages=true
+ProgressBarShowPercentComplete=true
+UseProgressBar=true
+_Title=Upgrading Firmware...
+_SubTitle=Do not turn off your computer

src/usr/share/plymouth/themes/lubuntu-logo/lubuntu-logo.plymouth

@@ -1,8 +1,54 @@
 [Plymouth Theme]
-Name=Lubuntu Logo
-Description=A theme that features a blank background with a logo.
-ModuleName=script
+Name=BGRT
+Description=Jimmac's spinner theme using the ACPI BGRT graphics as background, modified by Lubuntu
+ModuleName=two-step
 
-[script]
-ImageDir=/usr/share/plymouth/themes/lubuntu-logo
-ScriptFile=/usr/share/plymouth/themes/lubuntu-logo/lubuntu-logo.script
+[two-step]
+Font=Ubuntu 12
+TitleFont=Ubuntu Light 30
+ImageDir=/usr/share/plymouth/themes/lubuntu-logo/spinner
+DialogHorizontalAlignment=.5
+DialogVerticalAlignment=.7
+TitleHorizontalAlignment=.5
+TitleVerticalAlignment=.382
+HorizontalAlignment=.5
+VerticalAlignment=.7
+WatermarkHorizontalAlignment=.5
+WatermarkVerticalAlignment=.96
+Transition=none
+TransitionDuration=0.0
+BackgroundStartColor=0x0078c2
+BackgroundEndColor=0x0078c2
+ProgressBarBackgroundColor=0x600000
+ProgressBarForegroundColor=0xffffff
+DialogClearsFirmwareBackground=false
+MessageBelowAnimation=true
+
+[boot-up]
+UseEndAnimation=false
+UseFirmwareBackground=true
+
+[shutdown]
+UseEndAnimation=false
+UseFirmwareBackground=true
+
+[updates]
+SuppressMessages=true
+ProgressBarShowPercentComplete=true
+UseProgressBar=true
+_Title=Installing Updates...
+_SubTitle=Do not turn off your computer
+
+[system-upgrade]
+SuppressMessages=true
+ProgressBarShowPercentComplete=true
+UseProgressBar=true
+_Title=Upgrading System...
+_SubTitle=Do not turn off your computer
+
+[firmware-upgrade]
+SuppressMessages=true
+ProgressBarShowPercentComplete=true
+UseProgressBar=true
+_Title=Upgrading Firmware...
+_SubTitle=Do not turn off your computer