fix(generators): Changes to exports and access controls for TypeScript compatibility (#7295)

* fix(generators): Add missing declarations for Order enums

* chore(generators): Remove spurious whitespace

* fix(generators): Make provideFunction_ etc. public

  Remove the protected declaration on provideFunction_ and
  FUNCTION_NAME_PLACEHOLDER_ so they can be used from generator
  functions written in TypeScript.

  Not strictly part of #7283, but closely related and required to
  fixing the related issue google/blockly-samples#1785.

* chore(generators): format

typings/python.d.ts

@@ -4,4 +4,28 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+export enum Order {
+  ATOMIC = 0,             // 0 "" ...
+  COLLECTION = 1,         // tuples, lists, dictionaries
+  STRING_CONVERSION = 1,  // `expression...`
+  MEMBER = 2.1,           // . []
+  FUNCTION_CALL = 2.2,    // ()
+  EXPONENTIATION = 3,     // **
+  UNARY_SIGN = 4,         // + -
+  BITWISE_NOT = 4,        // ~
+  MULTIPLICATIVE = 5,     // * / // %
+  ADDITIVE = 6,           // + -
+  BITWISE_SHIFT = 7,      // << >>
+  BITWISE_AND = 8,        // &
+  BITWISE_XOR = 9,        // ^
+  BITWISE_OR = 10,        // |
+  RELATIONAL = 11,        // in, not in, is, is not, >, >=, <>, !=, ==
+  LOGICAL_NOT = 12,       // not
+  LOGICAL_AND = 13,       // and
+  LOGICAL_OR = 14,        // or
+  CONDITIONAL = 15,       // if else
+  LAMBDA = 16,            // lambda
+  NONE = 99,              // (...)
+}
+
 export declare const pythonGenerator: any;