OSM: search by tags "amenity" and "shop" after delocalizing (#1253)

* OSM: search by tags "amenity" and "shop" after delocalizing

* use overpassQL UNION

* document Union usage

* cleanup unused imports

* refine restaurant queries

* two more :)

* Hardcode string -> tag assignment

* Remove log statement

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Co-authored-by: MM20 <15646950+MM2-0@users.noreply.github.com>

core/ktx/src/main/java/de/mm20/launcher2/ktx/String.kt

@@ -29,4 +29,10 @@ fun String.normalize(): String {
  */
 fun String.romanize(): String {
     return Pinyin.toPinyin(this, "")
-}
+}
+
+fun String.stripStartOrNull(s: String): String?
+    = if (startsWith(s)) removePrefix(s) else null
+
+fun String.stripEndOrNull(s: String): String?
+    = if (endsWith(s)) removeSuffix(s) else null