Library Add request (#2491)

* Update repositories.txt

Adding mcm-bl0940-lib library

* Update repositories.txt

* Update repositories.txt

Adding MCM BL0940 Library

* Update repositories.txt

mcm-bl0940-lib library added

Author: mcmchris

repositories.txt

@@ -5411,6 +5411,7 @@ https://github.com/RLL-Blue-Dragon/OSS-EC_TDK_CHS-MSS_00000057
 https://github.com/RLL-Blue-Dragon/OSS-EC_TDK_CHS-UPS_UPR_UGS_UGR_00000057
 https://github.com/khoih-prog/SAMD_PWM
 https://github.com/mcmchris/mcm-grove-voltage-sensor
+https://github.com/mcmchris/mcm-bl0940-lib
 https://github.com/khoih-prog/SAMDUE_PWM
 https://github.com/npuckett/arduinoAnimation
 https://github.com/khoih-prog/nRF52_PWM