Add Estonian language

Closes: #1646

modules/analysis/src/main/scala/docspell/analysis/date/DateFind.scala

@@ -110,6 +110,7 @@ object DateFind {
         case Language.Hebrew     => dmy
         case Language.Lithuanian => ymd
         case Language.Polish     => dmy
+        case Language.Estonian   => dmy
       }
       p.read(parts) match {
         case Result.Success(sds, _) =>

modules/analysis/src/main/scala/docspell/analysis/date/MonthName.scala

@@ -60,6 +60,8 @@ object MonthName {
         lithuanian
       case Language.Polish =>
         polish
+      case Language.Estonian =>
+        estonian
     }
 
   private val numbers = List(
@@ -375,4 +377,19 @@ object MonthName {
     List("listopada", "lis"),
     List("grudnia", "gru")
   )
+
+  private val estonian = List(
+    List("jaanuar", "jaan"),
+    List("veebruar", "veebr"),
+    List("märts"),
+    List("aprill", "apr"),
+    List("mai"),
+    List("juuni"),
+    List("juuli"),
+    List("august", "aug"),
+    List("september", "sept"),
+    List("oktoober", "okt"),
+    List("november", "nov"),
+    List("detsember", "dets")
+  )
 }

modules/analysis/src/test/scala/docspell/analysis/date/DateFindTest.scala

@@ -259,4 +259,32 @@ class DateFindTest extends FunSuite {
       )
     )
   }
+
+  test("find estonian dates") {
+    assertEquals(
+      DateFind
+        .findDates(
+          "Some text in estonian 21 juuli 2022 and stuff",
+          Language.Estonian
+        )
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(2022, 7, 21),
+          NerLabel("21 juuli 2022", NerTag.Date, 22, 35)
+        )
+      )
+    )
+    assertEquals(
+      DateFind
+        .findDates("19.11.21", Language.Estonian)
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(2021, 11, 19),
+          NerLabel("19.11.21", NerTag.Date, 0, 8)
+        )
+      )
+    )
+  }
 }