feat(obsidian-livesync): initial CouchDB LiveSync deployment

apps/obsidian-livesync/couchdb-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: couchdb
+  namespace: obsidian
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: couchdb
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app: couchdb
+    spec:
+      containers:
+        - name: couchdb
+          image: couchdb:3
+          env:
+            - name: COUCHDB_USER
+              valueFrom:
+                secretKeyRef:
+                  name: couchdb-secret
+                  key: COUCHDB_USER
+            - name: COUCHDB_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: couchdb-secret
+                  key: COUCHDB_PASSWORD
+            - name: COUCHDB_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: couchdb-secret
+                  key: COUCHDB_SECRET
+          ports:
+            - containerPort: 5984
+              name: http
+          volumeMounts:
+            - name: couchdb-data
+              mountPath: /opt/couchdb/data
+            - name: couchdb-config
+              mountPath: /opt/couchdb/etc/local.d/livesync.ini
+              subPath: livesync.ini
+          livenessProbe:
+            httpGet:
+              path: /_up
+              port: 5984
+            initialDelaySeconds: 30
+            periodSeconds: 30
+          readinessProbe:
+            httpGet:
+              path: /_up
+              port: 5984
+            initialDelaySeconds: 10
+            periodSeconds: 10
+          resources:
+            requests:
+              cpu: 50m
+              memory: 128Mi
+            limits:
+              cpu: 500m
+              memory: 256Mi
+      volumes:
+        - name: couchdb-data
+          persistentVolumeClaim:
+            claimName: couchdb-data
+        - name: couchdb-config
+          configMap:
+            name: couchdb-config