[Step 2][ESQL] Autocomplete part (#148307)

## Summary

Autocomplete support for ESQL lang. Initially target branch for that PR
was
[elastic:feature-esql](https://github.com/elastic/kibana/tree/feature-esql)
but then we decided to merge it separately. This PR is as copy of
#148006

## Notes: 
Important: please do `yarn kbn clean & yarn kbn bootstrap` before
testing.

## How to update syntax. 

`antlr` syntax was copied from `ES` and was slightly modified. In case
if you need to update it please follow next steps:
- modify `esql_parser.g4 `and/or `esql_lexer.g4` files
- go to `kbn-monaco` package and execute `bazel clean & npm run
build:antlr4ts:painless`
- go to /painless_parser.ts file and revert the following change: 

<img width="478" alt="image"
src="https://user-images.githubusercontent.com/20072247/209540586-bb77cad1-a6f0-42fa-9875-025bd4afbace.png">

- do `yarn kbn bootstrap`

packages/kbn-monaco/index.ts

@@ -11,7 +11,8 @@ import './src/register_globals';
 export { monaco } from './src/monaco_imports';
 export { XJsonLang } from './src/xjson';
 export { SQLLang } from './src/sql';
-export { ESQL_LANG_ID, ESQL_THEME_ID } from './src/esql';
+export { ESQL_LANG_ID, ESQL_THEME_ID, ESQLLang } from './src/esql';
+export type { ESQLCustomAutocompleteCallbacks } from './src/esql';
 
 export * from './src/painless';
 /* eslint-disable-next-line @kbn/eslint/module_migration */

packages/kbn-monaco/src/common/error_listener.ts

@@ -6,7 +6,7 @@
  * Side Public License, v 1.
  */
 
-import { ANTLRErrorListener, RecognitionException, Recognizer } from 'antlr4ts';
+import { ANTLRErrorListener, Recognizer } from 'antlr4ts';
 import type { EditorError } from '../types';
 
 export class ANTLREErrorListener implements ANTLRErrorListener<any> {
@@ -17,8 +17,7 @@ export class ANTLREErrorListener implements ANTLRErrorListener<any> {
     offendingSymbol: any,
     line: number,
     column: number,
-    message: string,
-    e: RecognitionException | undefined
+    message: string
   ): void {
     let endColumn = column + 1;
 

packages/kbn-monaco/src/esql/antlr/esql_lexer.g4

@@ -29,7 +29,6 @@ WS
     : [ \r\n\t]+ -> channel(HIDDEN)
     ;
 
-
 mode EXPRESSION;
 
 PIPE : '|' -> popMode;
@@ -73,43 +72,55 @@ DECIMAL_LITERAL
 BY : 'by';
 
 AND : 'and';
-ASC : 'asc';
 ASSIGN : '=';
 COMMA : ',';
-DESC : 'desc';
 DOT : '.';
-FALSE : 'false';
-FIRST : 'first';
-LAST : 'last';
 LP : '(';
 OPENING_BRACKET : '[' -> pushMode(DEFAULT_MODE);
 CLOSING_BRACKET : ']' -> popMode, popMode; // pop twice, once to clear mode of current cmd and once to exit DEFAULT_MODE
 NOT : 'not';
 NULL : 'null';
-NULLS : 'nulls';
 OR : 'or';
 RP : ')';
-TRUE : 'true';
 
-EQ  : '==';
-NEQ : '!=';
-LT  : '<';
-LTE : '<=';
-GT  : '>';
-GTE : '>=';
+BOOLEAN_VALUE
+   : 'true'
+   | 'false'
+   ;
+
+COMPARISON_OPERATOR
+    : '=='
+    |'!='
+    | '<'
+    | '<='
+    | '>'
+    | '>='
+    ;
 
 PLUS : '+';
 MINUS : '-';
 ASTERISK : '*';
 SLASH : '/';
 PERCENT : '%';
 
-ROUND_FUNCTION_MATH : 'round';
-AVG_FUNCTION_MATH : 'avg';
-SUM_FUNCTION_MATH : 'sum';
-MIN_FUNCTION_MATH : 'min';
-MAX_FUNCTION_MATH : 'max';
+ORDERING
+    : 'asc'
+    | 'desc'
+    ;
+
+NULLS_ORDERING: 'nulls';
+NULLS_ORDERING_DIRECTION
+    : 'first'
+    | 'last'
+    ;
 
+UNARY_FUNCTION
+    : 'round'
+    | 'avg'
+    | 'min'
+    | 'max'
+    | 'sum'
+    ;
 
 UNQUOTED_IDENTIFIER
     : (LETTER | '_') (LETTER | DIGIT | '_')*
@@ -163,5 +174,3 @@ SRC_MULTILINE_COMMENT
 SRC_WS
     : WS -> channel(HIDDEN)
     ;
-
-UNKNOWN_CMD : ~[ \r\n\t[\]/]+ -> pushMode(EXPRESSION);

packages/kbn-monaco/src/esql/antlr/esql_lexer.tokens

@@ -16,50 +16,37 @@ INTEGER_LITERAL=15
 DECIMAL_LITERAL=16
 BY=17
 AND=18
-ASC=19
-ASSIGN=20
-COMMA=21
-DESC=22
-DOT=23
-FALSE=24
-FIRST=25
-LAST=26
-LP=27
-OPENING_BRACKET=28
-CLOSING_BRACKET=29
-NOT=30
-NULL=31
-NULLS=32
-OR=33
-RP=34
-TRUE=35
-EQ=36
-NEQ=37
-LT=38
-LTE=39
-GT=40
-GTE=41
-PLUS=42
-MINUS=43
-ASTERISK=44
-SLASH=45
-PERCENT=46
-ROUND_FUNCTION_MATH=47
-AVG_FUNCTION_MATH=48
-SUM_FUNCTION_MATH=49
-MIN_FUNCTION_MATH=50
-MAX_FUNCTION_MATH=51
-UNQUOTED_IDENTIFIER=52
-QUOTED_IDENTIFIER=53
-EXPR_LINE_COMMENT=54
-EXPR_MULTILINE_COMMENT=55
-EXPR_WS=56
-SRC_UNQUOTED_IDENTIFIER=57
-SRC_QUOTED_IDENTIFIER=58
-SRC_LINE_COMMENT=59
-SRC_MULTILINE_COMMENT=60
-SRC_WS=61
-UNKNOWN_CMD=62
+ASSIGN=19
+COMMA=20
+DOT=21
+LP=22
+OPENING_BRACKET=23
+CLOSING_BRACKET=24
+NOT=25
+NULL=26
+OR=27
+RP=28
+BOOLEAN_VALUE=29
+COMPARISON_OPERATOR=30
+PLUS=31
+MINUS=32
+ASTERISK=33
+SLASH=34
+PERCENT=35
+ORDERING=36
+NULLS_ORDERING=37
+NULLS_ORDERING_DIRECTION=38
+UNARY_FUNCTION=39
+UNQUOTED_IDENTIFIER=40
+QUOTED_IDENTIFIER=41
+EXPR_LINE_COMMENT=42
+EXPR_MULTILINE_COMMENT=43
+EXPR_WS=44
+SRC_UNQUOTED_IDENTIFIER=45
+SRC_QUOTED_IDENTIFIER=46
+SRC_LINE_COMMENT=47
+SRC_MULTILINE_COMMENT=48
+SRC_WS=49
 'eval'=1
 'explain'=2
 'from'=3
@@ -71,34 +58,17 @@ UNKNOWN_CMD=62
 'project'=9
 'by'=17
 'and'=18
-'asc'=19
-'desc'=22
-'.'=23
-'false'=24
-'first'=25
-'last'=26
-'('=27
-'['=28
-']'=29
-'not'=30
-'null'=31
-'nulls'=32
-'or'=33
-')'=34
-'true'=35
-'=='=36
-'!='=37
-'<'=38
-'<='=39
-'>'=40
-'>='=41
-'+'=42
-'-'=43
-'*'=44
-'/'=45
-'%'=46
-'round'=47
-'avg'=48
-'sum'=49
-'min'=50
-'max'=51
+'.'=21
+'('=22
+'['=23
+']'=24
+'not'=25
+'null'=26
+'or'=27
+')'=28
+'+'=31
+'-'=32
+'*'=33
+'/'=34
+'%'=35
+'nulls'=37