ERA: Add ERA file support package (#3853)

* add new era package

* era: add helper functions for export as era1

* update spelling

* update packagelock

* client: add era package dependency

* client: add utility functions to export history

* client: export export history as RPC method

* era: add types file

* era: add file for compression / uncompression functions

* era: add file for e2store functions

* era: add functions for block tuples

* era: add functions for reading and validating era1 files

* update packagelock

* update spelling

* export from index.ts

* add test for reading era1

* fix spelling error

* update tsconfig

* move function to era package

* era: switch ssz dependency

* fix ssz usage

* era: functions for export history directly from dataDir

* era: add level and blockchain dependencies

* client: remove era functions from client package

* update packagelock

* era: add function to reconstruct block from tuple

* era: add function to getHeaderRecords from file

* era: add helper for readBinaryFile

* update README

* update README

* update README

* Update packages/era/src/exportHistory.ts

Co-authored-by: acolytec3 <[email protected]>

* update tsconfig

* fix import

* check for directory existence first

---------

Co-authored-by: acolytec3 <[email protected]>

Author: ScottyPoi

config/cspell-md.json

@@ -321,6 +321,13 @@
     "beaconroot",
     "Grandine",
     "EVMBN",
-    "kaust"
+    "kaust",
+    "Scotty",
+    "ScottyPoi",
+    "snappystream",
+    "Unsnappy",
+    "unsnappy",
+    "ethportal",
+    "bytevector"
   ]
 }

config/cspell-ts.json

@@ -621,6 +621,14 @@
     "Statetest",
     "testeth",
     "PUSHDATA",
-    "chunkified"
+    "chunkified",
+    "ScottyPoi",
+    "Scotty",
+    "snappystream",
+    "ethjs",
+    "Unsnappy",
+    "unsnappy",
+    "ethportal",
+    "bytevector"
   ]
-}
+}