Migrate MSDK functionality to Rust (full rewrite)

[WhiteHoodHacker]

We need to implement the following:

• [x] UART (@jasmehar, @sgohil3)
  • [x] UART0 initialization
  • [x] UART0 sending
  • [x] UART0 receiving
• [x] I2C (@pari-thimaalk, @lrams, @krish-asher)
  • [x] I2C1 initialization (master)
  • [x] I2C1 initialization (slave)
  • [x] I2C1 sending
  • [x] I2C1 receiving
• [x] TRNG (@yumenegi, @aswaroop976, @WhiteHoodHacker)
  • [x] TRNG initialization
  • [x] Generate ONE random integer
  • [x] Generate MULTIPLE random integers given array
• [x] TMR (@WhiteHoodHacker)
  • [x] TMR0 initialization
  • [x] TMR0 read time/delay
  • [x] TMR1 initialization
  • [x] TMR1 read time/delay
• [x] Flash (@chir4gm, @WhiteHoodHacker)
  • [x] FLC initialization
  • [x] FLC read
  • [x] FLC write
  • [x] FLC page erase
  • [x] FLC write lock for code pages
• [x] LEDs (@WhiteHoodHacker)
  • [x] On
  • [x] Off
  • [x] Toggle