Add matrix session extensions

app/src/main/java/com/futo/circles/extensions/MatrixSessionExtensions.kt

+package com.futo.circles.extensions
+
+import com.bumptech.glide.request.target.Target
+import com.futo.circles.provider.MatrixSessionProvider
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import org.matrix.android.sdk.api.session.Session
+import org.matrix.android.sdk.api.session.content.ContentUrlResolver
+
+private val sessionCoroutineScopes = HashMap<String, CoroutineScope>(1)
+
+val Session.coroutineScope: CoroutineScope
+    get() {
+        return synchronized(sessionCoroutineScopes) {
+            sessionCoroutineScopes.getOrPut(sessionId) {
+                CoroutineScope(SupervisorJob() + Dispatchers.Main.immediate)
+            }
+        }
+    }
+
+fun Session.resolveUrl(url: String?, size: Int = Target.SIZE_ORIGINAL): String? {
+    val resolver = MatrixSessionProvider.currentSession?.contentUrlResolver()
+
+    return if (size == Target.SIZE_ORIGINAL) {
+        resolver?.resolveFullSize(url)
+    } else {
+        resolver?.resolveThumbnail(
+            url,
+            size, size,
+            ContentUrlResolver.ThumbnailMethod.SCALE
+        )
+    }
+}