Update missing-signer-check lint to handle anchor programs separately

[S3v3ru5]

The PR updates the missing-signer-check lint to print Accounts structs in anchor programs. The lint will highlight accounts that might need to be signers. It uses the type of the account to determine if the account should be reported.

The lint will report accounts of type AccountInfo, UncheckedAccount and SystemProgramAccount. The chances of reported field being a false positive are high. But the number of results is bounded by the number of different #[derive(Accounts)] structs.

Example warning:

warning: Account `drift_signer` might need to be a signer
    --> programs/drift/src/instructions/user.rs:2113:5
     |
2090 | pub struct Withdraw<'info> {
     |            -------- Accounts of this instruction
...
2113 |     pub drift_signer: AccountInfo<'info>,
     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: Accounts `drift_signer`, and `instructions` might need to be signers
    --> programs/drift/src/instructions/user.rs:2321:5
     |
2279 | pub struct Swap<'info> {
     |            ---- Accounts of this instruction
...
2321 |     pub drift_signer: AccountInfo<'info>,
     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
2325 |     pub instructions: UncheckedAccount<'info>,
     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The tests need to be updated: The lint is updated to determine whether the Solana program is an anchor program. And based on that different logic is executed. The test programs are written using Anchor but the results are of the non-anchor logic. Have to discuss and make appropriate changes.