Perform simple https request with System.Security.Cryptography.Native.Android PAL

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In order to support a simple https request, we need the following pinvokes to directly integrate with Android api's:

await new HttpClient().GetStringAsync("https://mail.google.com/mail/");

• CryptoNative_BioCtrlPending
• CryptoNative_BioDestroy
• CryptoNative_BioNewFile
• CryptoNative_BioRead
• CryptoNative_BioWrite
• CryptoNative_CheckX509Hostname
• CryptoNative_CreateMemoryBio
• CryptoNative_EncodeAsn1Integer
• CryptoNative_EnsureLibSslInitialized
• CryptoNative_EnsureOpenSslInitialized`
• CryptoNative_ErrClearError
• CryptoNative_ErrPeekError
• CryptoNative_ErrPeekLastError
• CryptoNative_GetAsn1IntegerDerSize
• CryptoNative_GetAsn1StringBytes
• CryptoNative_GetObjectDefinitionByName
• CryptoNative_GetX509NameRawBytes
• CryptoNative_GetX509RootStoreFile
• CryptoNative_GetX509RootStorePath
• CryptoNative_GetX509StackField
• CryptoNative_GetX509StackFieldCount
• CryptoNative_GetX509Thumbprint
• CryptoNative_IsSslRenegotiatePending
• CryptoNative_IsSslStateOK
• CryptoNative_LookupFriendlyNameByOid
• CryptoNative_NewX509Stack
• CryptoNative_ObjObj2Txt
• CryptoNative_PemReadX509FromBio
• CryptoNative_PushX509StackField
• CryptoNative_ReadX509AsDerFromBio
• CryptoNative_RecursiveFreeX509Stack
• CryptoNative_SetCiphers
• CryptoNative_SetEncryptionPolicy
• CryptoNative_SetProtocolOptions
• CryptoNative_SslCreate
• CryptoNative_SslCtxCreate
• CryptoNative_SslCtxDestroy
• CryptoNative_SslCtxSetQuietShutdown
• CryptoNative_SslDoHandshake
• CryptoNative_SslGet0AlpnSelected
• CryptoNative_SslGetCurrentCipherId
• CryptoNative_SslGetError
• CryptoNative_SslGetPeerCertChain
• CryptoNative_SslGetPeerCertificate
• CryptoNative_SslGetVersion
• CryptoNative_SslRead
• CryptoNative_SslSetBio
• CryptoNative_SslSetConnectState
• CryptoNative_SslSetTlsExtHostName
• CryptoNative_SslV2_3Method
• CryptoNative_SslWrite
• CryptoNative_Tls13Supported
• CryptoNative_X509ChainNew
• CryptoNative_X509CheckPurpose
• CryptoNative_X509Destroy
• CryptoNative_X509ExtensionGetData
• CryptoNative_X509ExtensionGetOid
• CryptoNative_X509GetExt
• CryptoNative_X509GetExtCount
• CryptoNative_X509GetIssuerName
• CryptoNative_X509GetSerialNumber
• CryptoNative_X509GetSubjectName
• CryptoNative_X509StackAddDirectoryStore
• CryptoNative_X509StackAddMultiple
• CryptoNative_X509StoreCtxCreate
• CryptoNative_X509StoreCtxDestroy
• CryptoNative_X509StoreCtxGetChain
• CryptoNative_X509StoreCtxGetError
• CryptoNative_X509StoreCtxInit
• CryptoNative_X509StoreCtxRebuildChain
• CryptoNative_X509StoreDestory
• CryptoNative_X509StoreSetVerifyTime
• CryptoNative_X509UpRef
• CryptoNative_X509VerifyCert