Test openapi schema of Register

Fix some routes
Improve Schema Validation

src/main/kotlin/fr/dcproject/common/BitMaskEnum.kt

@@ -0,0 +1,10 @@
+package fr.dcproject.common
+
+interface BitMaskI {
+    val bit: Long
+
+    infix operator fun contains(which: BitMaskI): Boolean = bit and which.bit == which.bit
+    infix operator fun plus(mask: BitMaskI): BitMaskI = BitMask(mask.bit and this.bit)
+}
+
+class BitMask(override val bit: Long) : BitMaskI