Add block test

tests/org/test_org_properties_block.nim

@@ -0,0 +1,19 @@
+import std/unittest
+import std/strformat
+import utils/str
+import results
+import org/org_properties_block
+import parser/parser_types
+import parser/parser_internals
+
+suite "org/org_properties_block":
+  test "parsing":
+    let testA = initParserResult(""":PROPERTIES:
+:PROP_STRING: String
+:PROP_INT: 1
+:PROP_URL: [[https://orgmode.org/][Org Mode]]
+:PROP_DATE: [2022-01-25 Tue 23:05]
+:PROP_EMPTY:
+:PROPERTIES_END:""").parseSeq(parseProperties)
+
+    check(testA.isOk() == true)