Update watcher dashboard and config templates (#835)

Part of [Metrics and logging for GQL queries in watcher](https://www.notion.so/Metrics-and-logging-for-GQL-queries-in-watcher-928c692292b140a2a4f52cda9795df5e)

- Update watcher config templates after config refactoring
- Mount watcher GQL query log files on volumes
- Update watcher dashboard to
  - add a panel to show latest processed block number
  - use latest processed block from sync status for diff values

Co-authored-by: Nabarun <nabarun@deepstacksoft.com>
Reviewed-on: cerc-io/stack-orchestrator#835
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

stack_orchestrator/data/config/watcher-sushiswap-v3/watcher-config-template.toml

@@ -2,7 +2,6 @@
   host = "0.0.0.0"
   port = 3008
   kind = "active"
-  gqlPath = "/"
 
   # Checkpointing state.
   checkpointing = true
@@ -22,23 +21,30 @@
   # Interval in number of blocks at which to clear entities cache.
   clearEntitiesCacheInterval = 1000
 
-  # Max block range for which to return events in eventsInRange GQL query.
-  # Use -1 for skipping check on block range.
-  maxEventsBlockRange = 1000
-
   # Flag to specify whether RPC endpoint supports block hash as block tag parameter
   rpcSupportsBlockHashParam = false
 
-  # GQL cache settings
-  [server.gqlCache]
-    enabled = true
+  # Server GQL config
+  [server.gql]
+    path = "/"
 
-    # Max in-memory cache size (in bytes) (default 8 MB)
-    # maxCacheSize
+    # Max block range for which to return events in eventsInRange GQL query.
+    # Use -1 for skipping check on block range.
+    maxEventsBlockRange = 1000
 
-    # GQL cache-control max-age settings (in seconds)
-    maxAge = 15
-    timeTravelMaxAge = 86400 # 1 day
+    # Log directory for GQL requests
+    logDir = "./gql-logs"
+
+    # GQL cache settings
+    [server.gql.cache]
+      enabled = true
+
+      # Max in-memory cache size (in bytes) (default 8 MB)
+      # maxCacheSize
+
+      # GQL cache-control max-age settings (in seconds)
+      maxAge = 15
+      timeTravelMaxAge = 86400 # 1 day
 
 [metrics]
   host = "0.0.0.0"
@@ -85,6 +91,9 @@
   # Filecoin block time: https://docs.filecoin.io/basics/the-blockchain/blocks-and-tipsets#blocktime
   blockDelayInMilliSecs = 30000
 
+  # Number of blocks by which block processing lags behind head
+  blockProcessingOffset = 0
+
   # Boolean to switch between modes of processing events when starting the server.
   # Setting to true will fetch filtered events and required blocks in a range of blocks and then process them.
   # Setting to false will fetch blocks consecutively with its events and then process them (Behaviour is followed in realtime processing near head).