Spy UI improvements (#11570)

* Minor linting

* More linting

* Consistent naming city/location, cache city on Spy (tile visibility perf)

* Empower SpyAction enum (minor perf)

* NotificationAction for Espionage, shorthand on the Spy instance

* Fix National Intelligence Agency giving one extra Spy level

* Fix "Move Spies" NextTurnButton prompt appearing every turn when spies are in Surveillance

* Fix failed tech theft rewarding tech anyway (and open spy kill chance when theft ordered but nothing to steal)

* Finally refactor SmallButtonStyle as standalone component

* Fix unable to assign spies for counter-intelligence

* Shorten establish-network phase for domestic spy placement

* Refactor and prettify MoveToCityButton, reuse as pointer who is to move (and some tiny changes)

* Decorate Spy icons by rank and show those in the hideout too

* Make city name labels in Espionage screen clickable

* Umm... duplicate targets behave same as single targets

* Spy mechanics - no establish network before counter-intelligence, commenting

* Oops, those lines do not belong in this branch anyway

android/assets/jsons/Civ V - Gods & Kings/Buildings.json

@@ -986,8 +986,11 @@
         "cost": 120,
         "culture": 1,
         "isNationalWonder": true,
-        "uniques": ["Hidden when espionage is disabled", "Gain an extra spy", "Promotes all spies",
-			"[-15]% enemy spy effectiveness [in this city]", "New spies start with [1] level(s)",
+        "uniques": ["Hidden when espionage is disabled",
+            "New spies start with [1] level(s)",
+            "Promotes all spies",
+            "Gain an extra spy", // Order is significant here
+			"[-15]% enemy spy effectiveness [in this city]",
 			"Only available <if [Police Station] is constructed in all [non-[Puppeted]] cities>",
 			"Cost increases by [30] per owned city"],
         "requiredTech": "Radio"