factor: optimize for u128 performance with modular architecture

Add modular factorization algorithms for improved u128 performance:
- algorithm_selection.rs: Smart algorithm selection based on number size
- crypto_bigint_adapter.rs: Adapter for crypto-bigint library
- ecm.rs, ecm_bsgs.rs, ecm_params.rs: Elliptic Curve Method implementation
- fermat.rs: Fermat's factorization method
- montgomery.rs: Montgomery arithmetic for modular operations
- pollard_rho.rs: Pollard's rho algorithm
- precomputed_curves.rs: Precomputed elliptic curves for ECM
- trial_division.rs: Optimized trial division
- u64_factor.rs: Fast u64 factorization

Author: naoNao89

.vscode/cspell.dictionaries/jargon.wordlist.txt

@@ -202,3 +202,25 @@ TUNABLES
 tunables
 VMULL
 vmull
+accum
+biguint
+BSGS
+bsgs
+coeff
+cofactor
+coprimes
+funcs
+Lenstra's
+modpow
+montg
+mult
+mulmod
+newr
+powmod
+precomp
+REDC
+redc
+sqmod
+Suyama
+SUYAMA
+unfactored