sdk: Extract clock crate (#1967)

* extract clock crate

* update clock usage in solana-program

* fmt

* fmt after rebase

* update lock file after rebase

* fmt after rebase

* fmt after rebase

* fmt

* make serde optional in solana-clock

* fix description

Co-authored-by: Jon C <me@jonc.dev>

* fix docs link

Co-authored-by: Jon C <me@jonc.dev>

* fix accidental deletions from workspace members table

---------

Co-authored-by: Jon C <me@jonc.dev>

Author: 2 people

interface/src/instruction.rs

@@ -5,7 +5,6 @@
 
 use {
     crate::{
-        clock::{Epoch, UnixTimestamp},
         instruction::{AccountMeta, Instruction},
         program_error::ProgramError,
         pubkey::Pubkey,
@@ -19,6 +18,7 @@ use {
     log::*,
     num_derive::{FromPrimitive, ToPrimitive},
     serde_derive::{Deserialize, Serialize},
+    solana_clock::{Epoch, UnixTimestamp},
     solana_decode_error::DecodeError,
     thiserror::Error,
 };

interface/src/stake_history.rs

@@ -6,7 +6,7 @@
 //!
 //! [`sysvar::stake_history`]: crate::sysvar::stake_history
 
-pub use crate::clock::Epoch;
+pub use solana_clock::Epoch;
 use std::ops::Deref;
 
 pub const MAX_ENTRIES: usize = 512; // it should never take as many as 512 epochs to warm up or cool down

interface/src/state.rs

@@ -8,7 +8,6 @@
 use borsh::{io, BorshDeserialize, BorshSchema, BorshSerialize};
 use {
     crate::{
-        clock::{Clock, Epoch, UnixTimestamp},
         instruction::InstructionError,
         pubkey::Pubkey,
         stake::{
@@ -17,6 +16,7 @@ use {
         },
         stake_history::{StakeHistoryEntry, StakeHistoryGetEntry},
     },
+    solana_clock::{Clock, Epoch, UnixTimestamp},
     std::collections::HashSet,
 };
 

interface/src/tools.rs

@@ -1,6 +1,7 @@
 //! Utility functions
-use crate::{
-    clock::Epoch, program_error::ProgramError, stake::MINIMUM_DELINQUENT_EPOCHS_FOR_DEACTIVATION,
+use {
+    crate::{program_error::ProgramError, stake::MINIMUM_DELINQUENT_EPOCHS_FOR_DEACTIVATION},
+    solana_clock::Epoch,
 };
 
 /// Helper function for programs to call [`GetMinimumDelegation`] and then fetch the return data