feat(findmydevice): Add helm chart for find my device

This patch adds a helm chart for find my device along with an
installation that should provide a first iteration of the service.
Currently a public release of the chart is still waiting for upstream
and it will require some minor tweaks if it's supposed to work with CRI
rather than just docker.

charts/findmydevice/values.yaml

+---
+image:
+  # -- Container registry image to use
+  repository: registry.shivering-isles.com/sheogorath/findmydevice-server
+  # -- Pull policy allows to configure whether an image should be used if already on the host or pulled freshly regardless.
+  pullPolicy: IfNotPresent
+  # -- Overrides the image tag whose default is the chart appVersion.
+  tag: ""
+
+persistentVolumeClaim:
+  # -- Volume Access mode, ReadWriteOnce is recommended
+  accessMode: ReadWriteOnce
+  # -- Requested Volume size of the PVC
+  size: 20Gi
+  # -- Storage class used for objectbox database
+  storageClass: null
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+serviceAccount:
+  # -- Specifies whether a service account should be created
+  create: true
+  # -- Annotations to add to the service account
+  annotations: {}
+  # -- The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: ""
+
+podAnnotations: {}
+
+podSecurityContext:
+  # -- Sets the filesystem permissions. Since the application requires the data directory to be owned by uid 1000
+  fsGroup: 1000
+
+securityContext:
+  capabilities:
+    # -- needs to add CAP_NET_BIND_SERVICE due to port < 1024
+    add:
+      - NET_BIND_SERVICE
+    drop:
+      - ALL
+  # readOnlyRootFilesystem: true
+  # -- Enforces that the application can't run as root
+  runAsNonRoot: true
+  # -- Starts the application as uid 1000
+  runAsUser: 1000
+
+service:
+  type: ClusterIP
+  port: 80
+
+ingress:
+  enabled: false
+  className: ""
+  annotations: {}
+  hosts:
+    - host: chart-example.local
+      paths:
+        - path: /
+          pathType: ImplementationSpecific
+  tls: []
+
+resources: 
+  requests:
+    cpu: "200m"
+    memory: 256Mi
+  limits:
+    cpu: "1"
+    memory: "512Mi"
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}