[Feature Request] Add support for CancellationToken

[jmprieur]

Is your feature request related to a problem? Please describe.
MSAL.NET 4.32.0 brings support for: CancellationToken on GetAccountAsync, RemoveAsync and TokenCacheNotificationArgs.

 public abstract class ClientApplicationBase : IClientApplicationBase 
{
  public Task<IAccount> GetAccountAsync(string accountId, CancellationToken cancellationToken=default(CancellationToken));
  public Task RemoveAsync(IAccount account, CancellationToken cancellationToken=default(CancellationToken));
 }

    public sealed class TokenCacheNotificationArgs {
        public CancellationToken CancellationToken { get; }
    }

Describe the solution you'd like

• Have new overrides in MsalAbstractTokenCacheProvider to support the cancellation tokens, implemented in MsalDistributedCacheAdapter. (trying avoiding a breaking change)
• Add a CancellationToken property in TokenAcquisitionOptions and, if available use it in TokenAcquisition in calls to:
  • AcquireTokenXXX methods
  • GetAccountAsync()
  • RemoveAsync

Additional context
MSAL.NET 4.32.0 also supports:

• .WithTenant() in all flows (which could be used instead of .WithAuthority). This would be to remove technical debt
• WithExtraHttpHeaders on AcquireTokenXXX

[jennyf19]

Fixed in 1.13 release.