render documented PL electricity signals (#158)

From
https://wiki.openstreetmap.org/wiki/Pl:OpenRailwayMap/Tagging_in_Poland/Pointers#We_10a%2C_We_10b%2C_We_10c%2C_We_10d%2C_We10e_i_We_10f_%E2%80%94_Wska%C5%BAniki_zmiany_systemu_zasilania

features/electrification_signals.yaml

@@ -750,7 +750,12 @@ electrification_signals:
 
     - description: Wskaźnik uprzedzający o opuszczeniu pantografu (we1)
       country: PL
-      icon: { default: 'pl/we1' }
+      icon:
+        match: 'railway:signal:electricity:turn_direction'
+        cases:
+          - { regex: '^right$', value: 'pl/we1b' }
+          - { regex: '^left$', value: 'pl/we1c' }
+        default: 'pl/we1a'
       tags:
         - { tag: 'railway:signal:electricity', value: 'PL-PKP:we1' }
         - { tag: 'railway:signal:electricity:form', value: 'sign' }
@@ -777,7 +782,7 @@ electrification_signals:
           - { regex: '^locomotive$', value: 'pl/we3b' }
         default: 'pl/we3a'
       tags:
-        - { tag: 'railway:signal:electricity', values: ['PL-PKP:we3a', 'PL-PKP:we3b'] }
+        - { tag: 'railway:signal:electricity', values: ['PL-PKP:we3a', 'PL-PKP:we3b', 'PL-PKP:we3c'] }
         - { tag: 'railway:signal:electricity:form', value: 'sign' }
         - { tag: 'railway:signal:electricity:type', value: 'pantograph_up' }
 
@@ -815,10 +820,58 @@ electrification_signals:
           - { regex: '^locomotive$', value: 'pl/we9b' }
         default: 'pl/we9a'
       tags:
-        - { tag: 'railway:signal:electricity', values: ['PL-PKP:we9a', 'PL-PKP:we9b'] }
+        - { tag: 'railway:signal:electricity', values: ['PL-PKP:we9a', 'PL-PKP:we9b', 'PL-PKP:we9c'] }
         - { tag: 'railway:signal:electricity:form', value: 'sign' }
         - { tag: 'railway:signal:electricity:type', value: 'power_on' }
 
+    - description: Wskaźniki zmiany systemu zasilania 25 kV
+      country: PL
+      icon: { default: 'pl/we10a' }
+      tags:
+        - { tag: 'railway:signal:electricity', value: 'PL-PKP:we10a' }
+        - { tag: 'railway:signal:electricity:form', value: 'sign' }
+        - { tag: 'railway:signal:electricity:type', value: 'power_change' }
+
+    - description: Wskaźniki zmiany systemu zasilania 25 kV
+      country: PL
+      icon: { default: 'pl/we10b' }
+      tags:
+        - { tag: 'railway:signal:electricity', value: 'PL-PKP:we10b' }
+        - { tag: 'railway:signal:electricity:form', value: 'sign' }
+        - { tag: 'railway:signal:electricity:type', value: 'power_change' }
+
+    - description: Wskaźniki zmiany systemu zasilania 15 kV
+      country: PL
+      icon: { default: 'pl/we10c' }
+      tags:
+        - { tag: 'railway:signal:electricity', value: 'PL-PKP:we10c' }
+        - { tag: 'railway:signal:electricity:form', value: 'sign' }
+        - { tag: 'railway:signal:electricity:type', value: 'power_change' }
+
+    - description: Wskaźniki zmiany systemu zasilania 15 kV
+      country: PL
+      icon: { default: 'pl/we10d' }
+      tags:
+        - { tag: 'railway:signal:electricity', value: 'PL-PKP:we10d' }
+        - { tag: 'railway:signal:electricity:form', value: 'sign' }
+        - { tag: 'railway:signal:electricity:type', value: 'power_change' }
+
+    - description: Wskaźniki zmiany systemu zasilania 3 kV
+      country: PL
+      icon: { default: 'pl/we10e' }
+      tags:
+        - { tag: 'railway:signal:electricity', value: 'PL-PKP:we10e' }
+        - { tag: 'railway:signal:electricity:form', value: 'sign' }
+        - { tag: 'railway:signal:electricity:type', value: 'power_change' }
+
+    - description: Wskaźniki zmiany systemu zasilania 3 kV
+      country: PL
+      icon: { default: 'pl/we10f' }
+      tags:
+        - { tag: 'railway:signal:electricity', value: 'PL-PKP:we10f' }
+        - { tag: 'railway:signal:electricity:form', value: 'sign' }
+        - { tag: 'railway:signal:electricity:type', value: 'power_change' }
+
     - description: Tram isolation (ct-1)
       country: PL
       icon: { default: 'pl/ct-1' }