feat(auth): Add Password Policies support in Project and Tenant config (

#2107)

* Password Policy Tenant and Project Changes
- Config changes
- Basic integration tests
- Basic unit tests

* Adding unit tests for PasswordPolicyAuthConfig
+ Comment for PasswordPolicyEnforcementState type

* Adding Project Config Unit Tests

* Tenant Unit Tests

* Lint fixes

* `npm run api-extractor:local` changes

* 1. `npm run api-extractor:local` changes
2. Documentation for some PasswordPolicyConfig interfaces/methods

* Revert formatting changes

* Lint changes

* Line break lint changes

* `eslint --fix .` fixes

* 1. Changing type of passwordPolicies to PasswordPolicyConfig on Tenant and ProjectConfig
2. Removing toJSON() method from PasswordPolicyAuthConfig
3. Marking PasswordPolicyAuthConfig as `internal`

* Minor changes

* Changes with approved config

* Undo package-lock.json changes

* Undo package-lock.json changes

* Undo package-lock.json changes

* Update package-lock.json

* Lint fixes

* Cleanup

* Revert package-lock.json

* Update project-config.ts

* Minor formatting

* Descriptive constants

* Lint fixes

* Fix import

* Update test/integration/auth.spec.ts

Co-authored-by: Lahiru Maramba <llahiru@gmail.com>

* Apply suggestions from code review

Co-authored-by: Lahiru Maramba <llahiru@gmail.com>

* Apply suggestions from code review

Co-authored-by: Kevin Cheung <kevinthecheung@users.noreply.github.com>

* Integration tests fix

* Small fix

* Reset password policy in integration tests to prevent breaking changes

* lint fix

* package-lock.json undo changes

* update merge

* lint fixes

* merge fixes

* Update package-lock.json

* Update package.json

* Allow enforcementState `OFF` with default constraints

* Lint fixes

* Adding recaptcha to server request

* Fill default passwordPolicyVersions values

* Lint fix

* remove debug logging

---------

Co-authored-by: Lahiru Maramba <llahiru@gmail.com>
Co-authored-by: Kevin Cheung <kevinthecheung@users.noreply.github.com>

etc/firebase-admin.auth.api.md

@@ -138,6 +138,16 @@ export interface CreateRequest extends UpdateRequest {
 // @public
 export type CreateTenantRequest = UpdateTenantRequest;
 
+// @public
+export interface CustomStrengthOptionsConfig {
+    maxLength?: number;
+    minLength?: number;
+    requireLowercase?: boolean;
+    requireNonAlphanumeric?: boolean;
+    requireNumeric?: boolean;
+    requireUppercase?: boolean;
+}
+
 // @alpha (undocumented)
 export interface DecodedAuthBlockingToken {
     // (undocumented)
@@ -329,6 +339,16 @@ export interface OIDCUpdateAuthProviderRequest {
     responseType?: OAuthResponseType;
 }
 
+// @public
+export interface PasswordPolicyConfig {
+    constraints?: CustomStrengthOptionsConfig;
+    enforcementState?: PasswordPolicyEnforcementState;
+    forceUpgradeOnSignin?: boolean;
+}
+
+// @public
+export type PasswordPolicyEnforcementState = 'ENFORCE' | 'OFF';
+
 // @public
 export interface PhoneIdentifier {
     // (undocumented)
@@ -344,6 +364,7 @@ export class PhoneMultiFactorInfo extends MultiFactorInfo {
 // @public
 export class ProjectConfig {
     get multiFactorConfig(): MultiFactorConfig | undefined;
+    readonly passwordPolicyConfig?: PasswordPolicyConfig;
     get recaptchaConfig(): RecaptchaConfig | undefined;
     readonly smsRegionConfig?: SmsRegionConfig;
     toJSON(): object;
@@ -427,6 +448,7 @@ export class Tenant {
     readonly displayName?: string;
     get emailSignInConfig(): EmailSignInProviderConfig | undefined;
     get multiFactorConfig(): MultiFactorConfig | undefined;
+    readonly passwordPolicyConfig?: PasswordPolicyConfig;
     get recaptchaConfig(): RecaptchaConfig | undefined;
     readonly smsRegionConfig?: SmsRegionConfig;
     readonly tenantId: string;
@@ -479,6 +501,7 @@ export interface UpdatePhoneMultiFactorInfoRequest extends BaseUpdateMultiFactor
 // @public
 export interface UpdateProjectConfigRequest {
     multiFactorConfig?: MultiFactorConfig;
+    passwordPolicyConfig?: PasswordPolicyConfig;
     recaptchaConfig?: RecaptchaConfig;
     smsRegionConfig?: SmsRegionConfig;
 }
@@ -503,6 +526,7 @@ export interface UpdateTenantRequest {
     displayName?: string;
     emailSignInConfig?: EmailSignInProviderConfig;
     multiFactorConfig?: MultiFactorConfig;
+    passwordPolicyConfig?: PasswordPolicyConfig;
     recaptchaConfig?: RecaptchaConfig;
     smsRegionConfig?: SmsRegionConfig;
     testPhoneNumbers?: {