Gold linker, CCache, Stats, LGTM

- Increases linker performance under Linux builds by using Gold linker, if available
- ccache is used if available
- removed statistic class (Stats.cpp) from project due to the missing result (sorry @Brindosch)
- add LGTM bandges for code analysis overview

Signed-off-by: Paulchen-Panther <Paulchen-Panter@protonmail.com>

effects/gif.py

@@ -1,4 +1,4 @@
-import os, hyperion, time
+import hyperion, time
 
 # Get the parameters
 imageFile = hyperion.args.get('image')

effects/knight-rider.py

@@ -1,4 +1,4 @@
-import hyperion, time, colorsys
+import hyperion, time
 
 # Get the parameters
 speed = float(hyperion.args.get('speed', 1.0))

effects/pacman.py

@@ -1,4 +1,4 @@
-import hyperion, time, colorsys
+import hyperion, time
 from random import randint
 
 #get args

effects/running_dots.py

@@ -1,4 +1,4 @@
-import hyperion, time, colorsys, random
+import hyperion, time
 
 # get options from args
 sleepTime  = float(hyperion.args.get('speed', 1.5)) * 0.005

effects/swirl.py

@@ -1,4 +1,4 @@
-import hyperion, time, math, random
+import hyperion, time, random
 
 # Convert x/y (0.0 - 1.0) point to proper int values based on Hyperion image width/height
 # Or get a random value

effects/waves.py

@@ -39,7 +39,7 @@ diag = int(diag*1.3)
 # calc positions
 pos = 0
 step = int(255/len(colors))
-for entry in colors:
+for _ in colors:
 	positions.append(pos)
 	pos += step
 

effects/x-mas.py

@@ -1,4 +1,4 @@
-import hyperion, time, colorsys
+import hyperion, time
 
 # Get the parameters
 sleepTime   = float(hyperion.args.get('sleepTime', 1000))/1000.0