solana-explorer: add map_filter_transactions module

solana-explorer/substreams.yaml

@@ -10,8 +10,8 @@ imports:
 
 protobuf:
   files:
-    - block_meta.proto
-    - program_instructions.proto
+    - block.proto
+    - transactions.proto
   importPaths:
     - ./proto
 
@@ -45,9 +45,20 @@ modules:
       - params: string
       - source: sf.solana.type.v1.Block
     output:
-      type: proto:sol.programs.v1.Instructions
+      type: proto:sol.transactions.v1.Instructions
     doc: |
       `map_filter_instructions` allows you to get instructions executed by a certain `program_id`, and returns the raw Instruction data model.
 
+  - name: map_filter_transactions
+    kind: map
+    inputs:
+      - params: string
+      - source: sf.solana.type.v1.Block
+    output:
+      type: proto:sol.transactions.v1.Transactions
+    doc: |
+      `map_filter_transaction` allows you to find a transaction by hash. You need to scope your search to the blocks you know you're going to find that transaction. Check with your preferred block explorer first.
+
 params:
   map_filter_instructions: "program_id=Stake11111111111111111111111111111111111111"
+  map_filter_transactions: "signature=21ED2HBGuLUwgbaBb77cGwFR8MkVQfjR9KszzCb7jZkeSysJkHAVew6RaaBh3r1zTefpdq9Kf5geFp19P3nUXB3t"