Mudcrawlers better in swamp, worse in buildings

Resolves #8823

changelog_entries/8837_mudcrawler_swamp.md

@@ -0,0 +1,2 @@
+ ### Units
+   * Mudcrawler and Giant Mudcrawler - increased swamp defense from 40% to 60%, swamp movement penalty reduced from 2 to 1, castle and village defense reduced from 60% to 50%

data/core/units/monsters/Giant_Mudcrawler.cfg

@@ -9,6 +9,14 @@
     small_profile="portraits/monsters/giant-mudcrawler.webp~CROP(0,63,400,337)"
     hitpoints=36
     movement_type=scuttlefoot
+    [movement_costs]
+        swamp_water=1
+    [/movement_costs]
+    [defense]
+        swamp_water=40
+        castle=50
+        village=50
+    [/defense]
     movement=4
     experience=50
     level=1

data/core/units/monsters/Mudcrawler.cfg

@@ -10,6 +10,14 @@
     small_profile="portraits/monsters/mudcrawler.webp~CROP(0,63,400,337)"
     hitpoints=20
     movement_type=scuttlefoot
+    [movement_costs]
+        swamp_water=1
+    [/movement_costs]
+    [defense]
+        swamp_water=40
+        castle=50
+        village=50
+    [/defense]
     movement=3
     experience=18
     level=0