add proxmox backup server template

app/proxmox_backup_server/README.sh

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+## Install
+* copy `pbs.sh` into `/usr/local/bin`
+* install `jq`
+
+## API permissions
+* `Audit` on every datastore which should be monitored

app/proxmox_backup_server/template_app_proxmox_backup_server_active.yaml

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+zabbix_export:
+  version: '7.0'
+  template_groups:
+    - uuid: a4cf0bf4375f4f0c9b3475b7a3531b3b
+      name: damage
+  templates:
+    - uuid: a0ed4ae0737d47c48938583a15510344
+      template: 'PBS Backup Status Active'
+      name: 'PBS Backup Status Active'
+      groups:
+        - name: damage
+      items:
+        - uuid: a0be013137cf4cd1b579c419cbace3c5
+          name: 'PBS JSON'
+          type: ZABBIX_ACTIVE
+          key: 'devloop.pbs[{HOST.CONN},{$DEVLOOP.PBS.API.PORT},{$DEVLOOP.PBS.API.USER.NAME},{$DEVLOOP.PBS.API.USER.REALM},{$DEVLOOP.PBS.API.USER.TOKEN},{$DEVLOOP.PBS.API.TOKENSECRET}]'
+          history: 1h
+          value_type: TEXT
+          trends: '0'
+      discovery_rules:
+        - uuid: 5bfb062fc9b444888a6013a4d225c843
+          name: PBS
+          type: DEPENDENT
+          key: devloop.pbs.discover
+          delay: '0'
+          item_prototypes:
+            - uuid: c94d7d2c7d354d21bf25d209e2be056b
+              name: 'PBS Backup Size {#DATASTORE}.{#NAMESPACE} {#BACKUP_TYPE}-{#BACKUP_ID}'
+              type: DEPENDENT
+              key: 'devloop.pbs.backup.size[{#DATASTORE}, {#NAMESPACE}, {#BACKUP_TYPE}, {#BACKUP_ID}]'
+              delay: '0'
+              units: B
+              preprocessing:
+                - type: JSONPATH
+                  parameters:
+                    - '$[0].size'
+              master_item:
+                key: 'devloop.pbs.backup[{#DATASTORE}, {#NAMESPACE}, {#BACKUP_TYPE}, {#BACKUP_ID}]'
+            - uuid: 30de20ba2d2841b186439b27a1ba4c38
+              name: 'PBS Backup Timestamp {#DATASTORE}.{#NAMESPACE} {#BACKUP_TYPE}-{#BACKUP_ID}'
+              type: DEPENDENT
+              key: 'devloop.pbs.backup.timestamp[{#DATASTORE}, {#NAMESPACE}, {#BACKUP_TYPE}, {#BACKUP_ID}]'
+              delay: '0'
+              units: unixtime
+              preprocessing:
+                - type: JSONPATH
+                  parameters:
+                    - '$[0]["backup-time"]'
+              master_item:
+                key: 'devloop.pbs.backup[{#DATASTORE}, {#NAMESPACE}, {#BACKUP_TYPE}, {#BACKUP_ID}]'
+            - uuid: bddc15b366be444ebf12d9f2d54ba196
+              name: 'PBS Backup {#DATASTORE}.{#NAMESPACE} {#BACKUP_TYPE}-{#BACKUP_ID} JSON'
+              type: DEPENDENT
+              key: 'devloop.pbs.backup[{#DATASTORE}, {#NAMESPACE}, {#BACKUP_TYPE}, {#BACKUP_ID}]'
+              delay: '0'
+              history: 1h
+              value_type: TEXT
+              trends: '0'
+              preprocessing:
+                - type: JSONPATH
+                  parameters:
+                    - '$[?(@.datastore==''{#DATASTORE}'' && @.namespace==''{#NAMESPACE}'' && @["backup-type"]==''{#BACKUP_TYPE}'' && @["backup-id"]==''{#BACKUP_ID}'')]'
+              master_item:
+                key: 'devloop.pbs[{HOST.CONN},{$DEVLOOP.PBS.API.PORT},{$DEVLOOP.PBS.API.USER.NAME},{$DEVLOOP.PBS.API.USER.REALM},{$DEVLOOP.PBS.API.USER.TOKEN},{$DEVLOOP.PBS.API.TOKENSECRET}]'
+          master_item:
+            key: 'devloop.pbs[{HOST.CONN},{$DEVLOOP.PBS.API.PORT},{$DEVLOOP.PBS.API.USER.NAME},{$DEVLOOP.PBS.API.USER.REALM},{$DEVLOOP.PBS.API.USER.TOKEN},{$DEVLOOP.PBS.API.TOKENSECRET}]'
+          lld_macro_paths:
+            - lld_macro: '{#BACKUP_ID}'
+              path: '$["backup-id"]'
+            - lld_macro: '{#BACKUP_TYPE}'
+              path: '$["backup-type"]'
+            - lld_macro: '{#DATASTORE}'
+              path: $.datastore
+            - lld_macro: '{#NAMESPACE}'
+              path: $.namespace
+      macros:
+        - macro: '{$DEVLOOP.PBS.API.PORT}'
+          value: '8007'
+          description: 'default 8007'
+        - macro: '{$DEVLOOP.PBS.API.TOKENSECRET}'
+          description: xxx-xxx-xxx-xxx
+        - macro: '{$DEVLOOP.PBS.API.USER.NAME}'
+        - macro: '{$DEVLOOP.PBS.API.USER.REALM}'
+          description: 'e.g. pbs'
+        - macro: '{$DEVLOOP.PBS.API.USER.TOKEN}'
+          description: 'token name'