Use CFE_TIME_ClockState_Enum_t in cmd/tlm and handling

[skliper]

Is your feature request related to a problem? Please describe.
Defined as int16 even though a type is available:

cFE/modules/time/fsw/src/cfe_time_utils.c

Line 764 in 84ba9a9

void CFE_TIME_SetState(int16 NewState)

cFE/modules/time/fsw/src/cfe_time_utils.c

Line 712 in 84ba9a9

int16 ClockState;

cFE/modules/time/fsw/src/cfe_time_utils.h

Line 192 in 84ba9a9

int16 PendingState;

cFE/modules/time/fsw/src/cfe_time_utils.h

Line 404 in 84ba9a9

void CFE_TIME_SetState(int16 NewState);

cFE/modules/time/fsw/inc/cfe_time_msg.h

Lines 768 to 770 in 84ba9a9

	int16 ClockState; /**< \brief #CFE_TIME_ClockState_INVALID=Spacecraft time has not been accurately set,
	#CFE_TIME_ClockState_VALID=Spacecraft clock has been accurately set,
	#CFE_TIME_ClockState_FLYWHEEL=Force into FLYWHEEL mode */

cFE/modules/time/fsw/inc/cfe_time_msg.h

Line 887 in 84ba9a9

int16 AtToneState; /**< \brief Clock state at time of tone */

cFE/modules/time/fsw/inc/cfe_time_msg.h

Lines 919 to 920 in 84ba9a9

	int16 ClockStateAPI; /**< \cfetlmmnemonic \TIME_APISTATE
	\brief API State */

cFE/modules/time/fsw/inc/cfe_time_msg.h

Lines 990 to 991 in 84ba9a9

	int16 ClockStateAPI; /**< \cfetlmmnemonic \TIME_APISTATE
	\brief Clock state as per API */

cFE/modules/time/fsw/src/cfe_time_utils.c

Line 396 in 84ba9a9

CFE_TIME_Global.HkPacket.Payload.ClockStateAPI = (int16)CFE_TIME_CalculateState(Reference);

cFE/modules/time/fsw/src/cfe_time_utils.c

Line 710 in 84ba9a9

int16 CFE_TIME_CalculateState(const CFE_TIME_Reference_t *Reference)

cFE/modules/time/fsw/src/cfe_time_utils.h

Line 398 in 84ba9a9

int16 CFE_TIME_CalculateState(const CFE_TIME_Reference_t *Reference);

Describe the solution you'd like
Use CFE_TIME_ClockState_Enum_t

Describe alternatives you've considered
None

Additional context
Code review

Requester Info
Jacob Hageman - NASA/GSFC