feat: Update grammars (#59)

This PR updates the ES|QL grammars (lexer and parser) and PromQL
grammars to match the latest version in Elasticsearch.

Co-authored-by: Grammar Sync Bot <elasticmachine@users.noreply.github.com>
Co-authored-by: Stratou <stratoula1@gmail.com>

Author: 3 people

src/parser/antlr/esql_lexer.interp

@@ -31,7 +31,7 @@ DEV_JOIN_FULL=30
 DEV_JOIN_LEFT=31
 DEV_JOIN_RIGHT=32
 DEV_LOOKUP=33
-DEV_MMR=34
+MMR=34
 MV_EXPAND=35
 DROP=36
 KEEP=37
@@ -189,6 +189,7 @@ SHOW_WS=168
 'inline'=27
 'inlinestats'=28
 'lookup'=29
+'mmr'=34
 'mv_expand'=35
 'drop'=36
 'keep'=37

src/parser/antlr/esql_lexer.tokens

@@ -75,10 +75,10 @@ processingCommand
     | metricsInfoCommand
     | registeredDomainCommand
     | tsInfoCommand
+    | mmrCommand
     // in development
     | {this.isDevVersion()}? lookupCommand
     | {this.isDevVersion()}? insistCommand
-    | {this.isDevVersion()}? mmrCommand
     ;
 
 whereCommand
@@ -223,7 +223,11 @@ stringOrParameter
     ;
 
 limitCommand
-    : LIMIT constant
+    : LIMIT constant limitByGroupKey?
+    ;
+
+limitByGroupKey:
+    {this.isDevVersion()}? BY grouping=fields
     ;
 
 sortCommand
@@ -395,7 +399,7 @@ setField
     ;
 
 mmrCommand
-    :  DEV_MMR (queryVector=mmrQueryVectorParams)? ON diversifyField=qualifiedName MMR_LIMIT limitValue=integerValue commandNamedParameters
+    :  MMR (queryVector=mmrQueryVectorParams)? ON diversifyField=qualifiedName MMR_LIMIT limitValue=integerValue commandNamedParameters
     ;
 
 mmrQueryVectorParams

src/parser/antlr/esql_lexer.ts

@@ -31,7 +31,7 @@ DEV_JOIN_FULL=30
 DEV_JOIN_LEFT=31
 DEV_JOIN_RIGHT=32
 DEV_LOOKUP=33
-DEV_MMR=34
+MMR=34
 MV_EXPAND=35
 DROP=36
 KEEP=37
@@ -189,6 +189,7 @@ SHOW_WS=168
 'inline'=27
 'inlinestats'=28
 'lookup'=29
+'mmr'=34
 'mv_expand'=35
 'drop'=36
 'keep'=37