Move crates under substreams directory.

This way we can run GHA jobs depending on what files changed.

.github/workflows/evm.yml

@@ -1,6 +1,9 @@
-name: test
+name: test evm
 
-on: workflow_dispatch
+on:
+  push:
+    paths:
+      - "evm/**"
 
 env:
   FOUNDRY_PROFILE: ci

substreams/crates/tycho-substreams/Readme.md

@@ -13,6 +13,6 @@ directory:
 ```bash
 buf generate \
   --path tycho \
-  --template ../crates/tycho-substreams/buf.gen.yaml \
-  --output ../crates/tycho-substreams/ 
+  --template ../substreams/crates/tycho-substreams/buf.gen.yaml \
+  --output ../substreams/crates/tycho-substreams/ 
 ```

substreams/ethereum-balancer/Cargo.toml

@@ -19,7 +19,7 @@ anyhow = "1.0.75"
 prost-types = "0.12.3"
 num-bigint = "0.4.4"
 itertools = "0.12.0"
-tycho-substreams = {path  ="../../crates/tycho-substreams"}
+tycho-substreams = {path  ="../crates/tycho-substreams"}
 
 [build-dependencies]
 anyhow = "1"