Add code-spell spelling checks to CI (#8067)

Help find and fix silly spelling errors as they are added to the repo.

libraries/ESP8266WiFiMesh/src/EspnowMeshBackend.h

@@ -172,7 +172,7 @@ public:
   * This vector is unique for each mesh backend, but NetworkInfo elements can be directly transferred between the vectors as long as both SSID and BSSID are present.
   * The connectionQueue vector is cleared before each new scan and filled via the networkFilter callback function once the scan completes.
   * WiFi connections will start with connectionQueue[0] and then incrementally proceed to higher vector positions. 
-  * Note that old network indicies often are invalidated whenever a new WiFi network scan occurs.
+  * Note that old network indices often are invalidated whenever a new WiFi network scan occurs.
   * 
   * Since the connectionQueue() is iterated over during transmissions, always use constConnectionQueue() from callbacks other than NetworkFilter.
   */
@@ -188,7 +188,7 @@ public:
   * This vector is unique for each mesh backend.
   * The latestTransmissionOutcomes vector is cleared before each new transmission attempt.
   * Connection attempts are indexed in the same order they were attempted.
-  * Note that old network indicies often are invalidated whenever a new WiFi network scan occurs.
+  * Note that old network indices often are invalidated whenever a new WiFi network scan occurs.
   */
   static std::vector<TransmissionOutcome> & latestTransmissionOutcomes();
 
@@ -260,7 +260,7 @@ public:
   
   /* 
    * Will ensure that an encrypted connection exists to each target node before sending the message, 
-   * establishing a temporary encrypted connection with duration getAutoEncryptionDuration() first if neccessary.
+   * establishing a temporary encrypted connection with duration getAutoEncryptionDuration() first if necessary.
    * If an encrypted connection cannot be established to a target node, no message will be sent to that node.
    * Note that if an encrypted connection to a target node is not present before this method is called, the response from said node will likely not be received
    * since it will be encrypted and the auto encrypted connection to the node is immediately removed after transmission (unless the requestPermanentConnections argument is set to true).
@@ -808,7 +808,7 @@ public:
    * @param peerMac The MAC of the other node to which the request should be sent.
    * @param durationMs The desired duration of the connection.
    * 
-   * @return EncryptedConnectionStatus::CONNECTION_ESTABLISHED if the request was succesful. EncryptedConnectionStatus::SOFT_LIMIT_CONNECTION_ESTABLISHED if only a temporary soft limit connection could be established (see the setEncryptedConnectionsSoftLimit method documentation for details). Otherwise another status code based on the outcome.
+   * @return EncryptedConnectionStatus::CONNECTION_ESTABLISHED if the request was successful. EncryptedConnectionStatus::SOFT_LIMIT_CONNECTION_ESTABLISHED if only a temporary soft limit connection could be established (see the setEncryptedConnectionsSoftLimit method documentation for details). Otherwise another status code based on the outcome.
    */
   EncryptedConnectionStatus requestTemporaryEncryptedConnection(const uint8_t *peerMac, const uint32_t durationMs);
 
@@ -825,7 +825,7 @@ public:
    * @param peerMac The MAC of the other node to which the request should be sent.
    * @param minDurationMs The desired minimum duration of the connection.
    * 
-   * @return EncryptedConnectionStatus::CONNECTION_ESTABLISHED if the request was succesful. EncryptedConnectionStatus::SOFT_LIMIT_CONNECTION_ESTABLISHED if only a temporary soft limit connection could be established (see the setEncryptedConnectionsSoftLimit method documentation for details). Otherwise another status code based on the outcome.
+   * @return EncryptedConnectionStatus::CONNECTION_ESTABLISHED if the request was successful. EncryptedConnectionStatus::SOFT_LIMIT_CONNECTION_ESTABLISHED if only a temporary soft limit connection could be established (see the setEncryptedConnectionsSoftLimit method documentation for details). Otherwise another status code based on the outcome.
    */
   EncryptedConnectionStatus requestFlexibleTemporaryEncryptedConnection(const uint8_t *peerMac, const uint32_t minDurationMs);